The Next Doctor

The Doctor lands in London on Christmas Eve, 1851, where he encounters a woman called Rosita Farisi and another man who calls himself 'The Doctor'. After failing to capture a Cybershade, the two men talk, with the Tenth Doctor believing the other to be a future regeneration. Unfortunately, the other (dubbed 'the Next Doctor') is lacking many memories. Meanwhile, the Cybermen are planning an attack with a human ally, Miss Mercy Hartigan. The Tenth Doctor follows the Next Doctor to a house of a dead man, the Reverend Aubrey Fairchild, where they search for clues to what the Cybermen are planning. The Next Doctor begins to regain some of his lost memories; when the Tenth Doctor finds a pair of 'infostamps' (the Cybermen's data storage devices) the Next Doctor remembers he was holding one the night he lost his memory. The Cybermen then attack the house, but before they can kill the 'Doctors', the Next Doctor kills them with an electrical charge from the infostamp.
At Fairchild's funeral, Mercy Hartigan and the Cybermen attack the mourners, sparing four who are subsequently fitted with Ear-Pods and dispatched by Miss Hartigan to their workhouses to recruit the children. Returning to the Next Doctor's home base, the Tenth Doctor is shown the other's TARDIS "Tethered Aerial Release Developed In Style" - a gas balloon. Realising what has happened, the Doctor explains that the Cybermen have escaped from the Void (following the Battle of Canary Wharf) when the walls of the universe were weakened in "a greater battle". The Cybermen came upon a man named Jackson Lake, the first person to disappear, attacking him and his wife. In the confusion, Lake destroyed the Cybermen with an infostamp (one containing information on the Doctor gleaned from the Daleks), as earlier in the house, but it also backfired, overwhelming Lake's mind with information about the Doctor. In despair at losing his wife, Lake entered a fugue state and came to believe he was the Doctor. Meanwhile, the children are taken to a sluice gate to the Thames. The Doctor and Rosita investigate and are confronted by Miss Hartigan, who explains that the Cybermen offered her liberation. The Doctor returns the infostamp to the Cybermen, who download it, confirming him as their foe. Miss Hartigan orders the Cybermen to delete the pair, but Lake appears and destroys the Cybermen with another infostamp, allowing them to escape. A furious Miss Hartigan announces that "the CyberKing will rise tonight!"
Lake reveals that he and his family were attacked at their new house and the Doctor realises it may lead to the Cybermen's base. There, they find a Dimension Vault, stolen Dalek technology that allowed the Cybermen to escape the Void. In the Cyber-base, the captive children are working to generate power to allow the CyberKing to ascend. Hartigan is betrayed by the CyberLeader and 'converted' to the CyberKing - thus receiving liberation from her anger and hatred. However, she proves too powerful to control, and uses her new powers to destroy the CyberLeader. The Doctor, Rosita and Jackson evacuate the children, including Jackson's son who was abducted when he was attacked. However, the CyberKing - a giant Cyberman-shaped robot ship - emerges from the Thames and begins to lay waste to London. Using the gas balloon, the Doctor confronts Hartigan and offers her a chance to live in peace. When she refuses, the Doctor uses the infostamps to sever her connection from the CyberKing. Realising what she has become, Hartigan screams in horror destroying the Cybermen and herself. Before the CyberKing can collapse on the city, the Doctor uses the dimension vault to transport it into the Time Vortex. In the aftermath, Jackson thanks the Doctor for what he has done and offers him a place at his Christmas celebration with Rosita and his son. The Doctor initially refuses, but is convinced to stay. Before they depart, Jackson enquires after the Doctor's many companions, and the Doctor replies that in the end, they find something better than him. The pair then head off for a Christmas dinner in honour of those they have lost.

Doctor Who: The Movie

The Movie Trailer 3

The Movie Trailer 2

The Movie Trailer 1

3.6 The Planets that die

3.5 A Crack in time

3.4 Planet of the Sontarans

3.3 The History Museum

3.2 A Ghostly Tardis

3.1 The New Planet

My Doctor Who Episodes Series 3

2.7 The End Of Earth

2.6 High Above The Sky

2.5 Day Off

2.4 Skelton's in the Cupboard

2.3 The Double Doctor

2.2 The Flame Of Destiny

2.1 Invasion Of The Zygons

My Doctor Who Episodes Series 2

1.7 The Great Exit

1.6 Lighting Strike On Earth

1.5 The Doctor's Birthday

1.4 Nightmare At Number 67

1.3 Sleep Quietly

1.2 The Doctor's Tool

1.1 Deal With The Devil

My Doctor Who Episodes Series 1

Journey's End

The episode continues on from the end of "The Stolen Earth"; the Doctor is regenerating inside the TARDIS. Once his body has healed, he halts the transformation by transferring the remaining energy into his severed hand. The TARDIS is captured by the Daleks and transported to the Crucible, the Dalek flagship at the heart of the 27 planets. The Doctor and his previous companions Jack Harkness and Rose Tyler leave the TARDIS, but Donna Noble is locked in. The Supreme Dalek orders the TARDIS to be destroyed; in the process, Donna collapses by the Doctor's severed hand, and activates the energy stored in the hand to form a second Doctor who saves the TARDIS from destruction.Concurrently, Torchwood employees Gwen Cooper and Ianto Jones find safety from an advancing Dalek in an impenetrable time bubble; Sarah Jane Smith is saved from a Dalek extermination by Rose's ex-boyfriend Mickey Smith and mother Jackie Tyler, who surrender with her to get aboard the Crucible; and Martha Jones teleports to a castle near Nuremberg where the Daleks are heard speaking German.The Doctor and Rose are taken to Davros, creator of the Daleks. The Doctor taunts Davros on account of the fact he is not in charge (Davros having been overthrown, imprisoned and kept alive for his knowledge), but Davros in turn retorts that the Doctor is as much a monster as he. Davros explains that the twenty-seven stolen planets form a compression field which can cancel the electrical energy of atoms. The resulting "reality bomb" has the potential to destroy all matter in every universe; reality itself would be destroyed.After the device is tested, the Daleks receive two transmissions: Sarah Jane, Mickey, Jack, and Jackie threaten to destroy the Crucible using a "Warpstar" that Sarah Jane had, and Martha threatens to use the Osterhagen Key - a last resort device which would destroy Earth by setting off a chain of nuclear warheads. Their actions cause Davros to challenge the Doctor's reliance on his companions. The companions, however, are transported to the Vault before they can execute their plans, whereupon Davros gloats over his seeming victory and makes the Doctor reflect over the deaths he has caused and the sheer number of people who have died for him. Davros then summarises the Doctor as "The man who keeps running, never looking back because he dare not...out of shame!" and calls the moment "This is my final victory Doctor; I have shown you yourself".Davros prepares to detonate the reality bomb, before the TARDIS materialises in front of him. The second Doctor and Donna run out but are stunned by Davros' energy blasts. The blast activates Time Lord knowledge imbued within Donna when she helped create the second Doctor, and she disables the reality bomb, Davros and the Daleks. The two Doctors help her relocate the missing planets, but the control panel is destroyed by the Supreme Dalek before Earth can be relocated. In the confusion, Davros asks Dalek Caan why he didn't foresee this, but the Doctor realises that he had. Caan confirms this, citing that having witnessed the atrocities committed by the Daleks throughout time and space, Caan sought to bring an end to it.Motivated by Dalek Caan's prophecy of the Daleks' extinction, and knowing the Daleks could still take the Universe by force, with or without the Reality Bomb, the new Doctor destroys the Daleks and the Crucible. The original Doctor offers to save Davros who refuses, accusing the Doctor of being responsible for the destruction and naming him as "the Destroyer of Worlds". The companions flee into the TARDIS as the Crucible self-destructs, and "tow" the Earth back into its original orbit with the aid of Sarah Jane's supercomputer Mr Smith, her robotic dog K-9, and the spatio-temporal rift in Cardiff.In the dénouement of the episode, the Doctor parts ways with his companions: Sarah Jane returns home to her son Luke; Martha and Mickey leave with Jack; and the Doctor returns Rose and Jackie to the parallel universe in which they were trapped in "Doomsday". Rose stays in her parallel universe with the part human doctor, after finding out that both doctors requite her love, but she can only spend her life with one of them. After departing, Donna becomes overwhelmed by the Time Lord knowledge. To save her life, the Doctor is forced to wipe her mind, and explains to her mother Sylvia and grandfather Wilfred Mott that Donna must never remember him, even for a second, because she will die if she does so. As the Doctor leaves, Wilfred promises that he will never forget the Doctor on his granddaughter's behalf.

The Stolen Earth

At the start of the episode—which immediately follows "Turn Left"—the Earth is teleported out of its spatial location shortly after the Doctor and his companion Donna Noble arrive to investigate Rose Tyler's warning. The Doctor contacts the Shadow Proclamation, a universal police force, to find Earth. They determine that twenty seven missing worlds including Earth, Adipose III, Pyrovillia and the Lost Moon of Poosh reorganise when placed near each other. Donna mentions the disappearance of bees on contemporary Earth; this allows the Doctor to trace the planets to the Medusa Cascade, an inter-universal rift.On Earth, a Dalek force, led by their creator Davros and the red Supreme Dalek, quickly subjugate Earth. Military bases, including UNIT's headquarters in New York City and their aircraft carrier Valiant, are destroyed. Davros, who was thought to have perished at the beginning of the Time War, was saved by Dalek Caan, who entered the conflict after performing an emergency temporal shift. The power needed to enter the Time War which is "time locked", preventing time travellers entering the conflict caused Caan to become precognitive, but at the cost of his sanity.The Doctor's former companions Captain Jack Harkness, Martha Jones, Sarah Jane Smith, and Rose Tyler who have all encountered the Daleks before hide in various places: Jack takes refuge in the Torchwood Hub with his team Ianto Jones and Gwen Cooper; Martha uses Project Indigo an experimental teleport device scavenged from the Sontarans to escape UNIT with the "Osterhagen Key", a device designed to be used as a last resort; Sarah stays in her home with her son Luke Smith and supercomputer Mr Smith; and Rose tracks down Donna's mother Sylvia Noble and grandfather Wilfred Mott. They are contacted by former Prime Minister Harriet Jones through a secret "sub-wave network" designed by Mr Copper a humanoid alien who met the Doctor in "Voyage of the Damned" to contact the Doctor's companions in an emergency. They attempt to contact the Doctor by amplifying the sub wave signal; Sarah uses Mr Smith's computing power and Torchwood manipulates the spatio-temporal rift in Cardiff. The Doctor and the Daleks receive the transmission and trace the signal: the Daleks exterminate Harriet Jones; and the Doctor is able to locate Earth in a temporally desynchronised pocket universe.At the end of the episode, the Doctor travels into the pocket universe and receives transmitted images of his companions in the subwave signal. After Davros hijacks the signal and taunts the Doctor about his resurrection and seeming victory, the Doctor breaks communication and attempts to convene with his companions, landing on a street where Rose is waiting for the Doctor. He runs to embrace her, but is shot by a Dalek. Jack promptly destroys the Dalek and helps Rose and Donna carry the Doctor into the TARDIS, where the Doctor begins to regenerate.

Turn Left

The episode begins with the Doctor and his companion Donna Noble strolling through a market place on the "Chino-planet of Shan Shen". Donna is persuaded by a fortune teller (Chipo Chung) to examine her past: specifically, the first event that led to her encounter with the Doctor. Donna recalls an argument with her mother Sylvia at a road junction: Donna wishes to turn left to become a temporary employee at the security firm H. C. Clements; her mother wishes for her to turn right to apply for a secretarial job at a local photocopying business. The fortune teller gives her another chance and persuades her to turn right; as she does, a large beetle crawls onto her back.The narrative focuses on an alternate history where Donna never met the Doctor and recalls several previous episodes: the Doctor dies during the events of "The Runaway Bride", leading to the deaths of his companions during the events of "Smith and Jones" and "The Poison Sky", the nuclear destruction of London during "Voyage of the Damned" and resulting dystopia, and deaths of millions in the United States during "Partners in Crime". Throughout the episode, several characters, most notably Rose Tyler, take an interest in the invisible beetle on her back.After the events of "The Poison Sky", Rose tells Donna of their comparable roles in the Doctor's life and explains that Donna is instrumental to saving the universe. When Donna's grandfather Wilfred Mott sees the stars go out, Donna acquiesces to Rose's request: she must travel back in time and ensure her past self turns left at the junction. With the help of a UNIT detachment who have been analyzing the crippled TARDIS, Donna is shown the creature on her back and told how to intervene once in the past. After Donna materialises in Sutton Court, Chiswick, she realises she cannot directly influence herself at the junction; instead, she causes a traffic jam by stepping in front of a haulage truck. As Donna is dying, Rose whispers two words for Donna to relay to the Doctor.The episode's final scene takes place on Shan Shen, where Donna's actions cause the beetle to fall off her back and the fortune teller to flee in fear. The Doctor appears and inspects the beetle: he says that it is part of the "Trickster's brigade", creatures that change timelines in small ways. He comments that Donna's actions inadvertently created a parallel universe and compliments her unusualness; she replies by mentioning Rose and repeating her final words: "Bad Wolf". A panicking Doctor exits the fortune teller's room and sees all text rendered as "Bad Wolf". He enters the TARDIS, and after hearing its cloister bell ringing, realises the end of the universe is imminent.

Midnight

While visiting the crystalline resort planet of Midnight, the exposed surface of which is bathed in xtonic radiation due to its close orbit around its sun, The Doctor is unable to persuade the spa-going Donna from joining him on a long shuttle bus trip to see the Sapphire Waterfall. Alone, The Doctor joins the other passengers on the shuttle—Professor Hobbes and his assistant Dee Dee, the Kane family of Biff, Val, and Jethro, and businesswoman Sky Silvestry—as it sets out; when the hostess attempts to start the cacophony of en route entertainment, The Doctor disables the system, and the rest of the passengers readily join him in casual conversation.
The bus stops mid-route, the pilots citing a problem with its micropetrol engines and sending a request for help. The Doctor insists they raise the radiation shields briefly to see if there's anything outside that caused the problem, but they see nothing; however, as they close the shields, one pilot claims to have spotted something moving outside. Soon, a rhythmic knocking starts on the hull of the shuttle, mimicking the patterns that the passengers make on the walls. The knocking moves around the hull to where Sky is cowering; the shuttle is rocked briefly, causing the lights to fail, but when they return, they find that the pilot cabin has been torn away, killing the pilots, and that Sky appears to be possessed amid an array of damaged seats.The Doctor talks to Sky, but she can only repeat the words he or the other passengers say. However, as he talks to her more, the delay in her repetition decreases, and soon is repeating whatever anyone says simultaneously. The other passengers fear for what has possessed Sky, and cabin fever sets in; they start to accuse The Doctor, distrusting him for not revealing who he truly is. The Doctor realises Sky is now repeating only his words, and turns back to Sky to try to help her. Soon, it is the Doctor that is now repeating Sky's words, causing the other passengers to think the possession has moved onto the Doctor. Though Sky tries to encourage the other passengers to throw The Doctor out of one of the airlocks, both the hostess and Dee Dee, and later, Jethro, believe this to be the next stage of Sky's possession. When Sky uses archaic phrases that The Doctor had used at the start of the trip, the hostess realises Sky is still possessed and sacrifices herself to drag Sky out of the other airlock. With Sky gone, the Doctor regains his normal self while the other passengers come to grips with what happens. As they wait out for rescue, The Doctor realises that no one knew the hostess's real name. At the spa, a mournful Doctor reunites with Donna. When she tries to imitate one of the Doctor's phrases, he quickly tells her not to.

Forest of The Dead

The Doctor, Strackman Lux, Prof. River Song and the rest of her group successfully flee from the Vashta Nerada that were pursuing them at the end of "Silence in the Library". As the group light up the room to dispel the shadows the Vashta Nerada may hide in, the Doctor finds that the Library's moon is sending out electromagnetic signals that interfere with his sonic screwdriver. Lux explains that the moon acts as a virus checker on the Library's computer core, causing the Doctor to recognise that Donna and the other 4022 people who were "saved" according to the Library were actually stored in the data core. The group make for the access point to the computer core, still pursued by the spacesuits of Song's former team-mates possessed by the Vashta Nerada. The Doctor pauses a moment to try to reason with the Vashta Nerada, and learns that the books in the Library were made from the trees in which their species had laid its eggs. The Vashta Nerada awoke in the Library and now take it as their own forest to defend.
Meanwhile, Donna wakes up in the care of Dr. Moon inside the Earth-like computer simulation, though Dr. Moon as well as the little girl who watches Donna from her television attempt to prevent Donna from recognising it as such. Dr. Moon introduces Donna to a man called Lee, and the two become lovers, marry and have two children in a quick succession of vignettes. One day, Donna is met by Miss Evangelista, who explains that the Library had stored her persona when she was attacked by the Vashta Nerada, but due to corruption, her face has become severely deformed, although she has become more intelligent. She explains to Donna that she is no longer in the real world and proves it by pointing out that all the children around them including Donna's are the same boy and girl duplicated many times. The little girl causes a distraction to prevent Donna from learning the full truth, but Donna's confidence is shaken, and when her children doubt their existence, they disappear. Donna desperately seeks out Lee. The little girl, fearing that the truth may be known, "deletes" her father and Dr. Moon, and descends into further despair.
To convince the Doctor that he will one day trust her absolutely, River Song murmurs in his ear something which shocks him. The Doctor and his group reach the core as Lux explains that "CAL", the name they have been seeing associated with the core, is the girl who is watching them through her television. She is really his aunt Charlotte Abigail Lux. As a child, she suffered from an incurable disease and Lux's grandfather paid for the construction of the Library, hooking Charlotte to its computer to allow her to spend eternity surrounded by humanity's literature. However, now that over four thousand other persons are in the core with her, even the "doctor" moon cannot help to keep the computer systems going. The Doctor plans to connect himself into the core to provide the stability to allow the rescued patrons to be reconstituted, and has Lux prepare for their arrival. When the Vashta Nerada threaten to attack them, the Doctor negotiates a deal—that once he frees the people from the core, he will have humanity leave the Library to them forever. The Vashta Nerada initially refuse, but when the Doctor tells them to look him up in the Library, they fearfully accept, giving him one day to clear the Library.
River Song recognises that the Doctor will die if he attempts to put himself in the data core, and knocks him out, taking his place instead. When he comes to, she has handcuffed him so he does not stop her, and she points out that if he dies before meeting her a paradox will be created. As Song connects herself to the system, Donna attempts to reach her husband Lee in the simulation before it whites out.
The Doctor's plan works as expected as all the stored humans, including Donna, are returned to corporeal form, and Lux begins to transport the humans off the planet. Donna attempts to find Lee but just misses him before he is transported away. The Doctor mournfully leaves Song's diary and sonic screwdriver to the Library, but suddenly questions why he would have given her the screwdriver in his future. He discovers that the screwdriver has a Data Ghost device in it, and races to the computer core to transfer its data into the computer. River Song awakens in the computer simulation, greeted by Charlotte, Dr. Moon, Evangelista and the rest of her team, and thanks the Doctor.

Silence In The Library

The Doctor and Donna arrive in the 51st century at a planet-sized book repository simply called "The Library", summoned by an anonymous request for help on the Doctor's psychic paper. However, they find it completely devoid of humanoid life, and the Library's computers even claim as such, though when the Doctor widens the search for non-humanoid life, the Library's computers claim over "a million million lifeforms" exist. A Node, an information drone which presents a donated human face to the user to facilitate communication, warns them to count the shadows, which appear despite the lack of objects to cast them. As they try to search for answers, they meet a team of explorers, led by archaeologist River Song, who have come to ascertain the meaning of the Library's final communication, which states "4022 saved, no survivors". River Song seems to know the Doctor, has a diary with a cover matching the Doctor's TARDIS, and even possesses a sonic screwdriver. She also later displays knowledge of the TARDIS's "emergency programme one". She only admits that she will know the Doctor in his relative future, refusing to disclose more for fear of spoilers. Professor Song also recognises Donna's name, but avoids explaining why Donna was not present when she knew the Doctor.
The Doctor organises the team to make sure the area is well lit as he explains that they are surrounded by Vashta Nerada, microscopic carnivorous creatures that disguise themselves as shadows to hunt and latch onto their prey. He notes that they are usually nowhere near as aggressive or numerous as the ones here seem to be. Before he can fully explain, however, Miss Evangelista wanders off and is stripped to the bone in moments. The Doctor and Donna learn that the exploration team wears communication devices which link to their nervous systems for thought-based communication. As a side-effect, these devices tend to retain an imprint of the user at the moment of death, creating a short-lived "Data Ghost" of that person's consciousness, which is capable of communicating with the living (being 'unaware' that it is dead) but eventually dissipates to the point where it simply repeats the last thing it said or nonsense.
Curiously, the Library's operations seem to be tied to the imagination of a young girl; she sees the Doctor and Donna through the eyes of a security camera when they first break into the central room, the exploration team appears on her television when the Doctor attempts to hack the Library computers, and books fly from the shelves when she fiddles with the television's remote control. The girl is under the observation of Dr. Moon, a child psychologist, at the request of her father, but Dr. Moon insists to the girl that what she imagines in her nightmares is in fact real, while the real world is a lie. He also states that there are people in her library who need to be saved.The team's investigation is interrupted when a shadow of Vashta Nerada latches onto the pilot, Dave. Although the Doctor attempts to save him by sealing him inside his suit, the creatures manage to get inside, eat him alive, and then animate his suit in order to chase the other explorers. The Doctor attempts to teleport Donna back to the TARDIS while he leads the rest of the team to safety, but something goes wrong with the teleport and Donna fails to materialise properly. As the team races away from the possessed suit, the Doctor is horrified to find a Node with Donna's face on it, which claims that Donna has left the Library and has been saved. The show ends in a cliffhanger as the Doctor is forced to leave the Node behind, but is trapped by the approaching suit on one side and the Vashta Nerada shadows on the other.

The Unicorn and the Wasp

The Doctor and Donna Noble arrive in 1926 and are invited to attend a dinner party hosted by Lady Eddison and her husband, Colonel Hugh. They are thrilled to find one of the guests is Agatha Christie, and realize that today is when she will inexplicably disappear for ten days. As the party ensues, some of the guests are found dead, following patterns from Agatha's books, though the Doctor finds traces of alien morphic residue at one of the scenes. Donna also encounters a giant wasp, which she is able to scare off; as it flies off, it morphs into a humanoid shape and eludes her. The Doctor himself becomes poisoned with cyanide but his Time Lord physiology allows him to detoxify himself with a combination of ingredients and a "shock" provided by Donna kissing him. This inspires him to add pepper to the dinner meal; while harmless to humans, it would act as an insecticide due to piperine. As they eat, the guests hear the wasp sound, but the lights in the room are blown out before they discover the identity of the alien. When the lights are restored, they have found that Lady Eddison's Firestone necklace has been stolen, and that Roger, Lady Eddison's son, has been murdered.
The Doctor assembles the remaining guests in the sitting room, and first Christie, then the Doctor himself, reveal several truths they've recognized about the guests, including the identity of the thief who stole the Firestone. Most importantly, he has determined that Lady Eddison's claim of suffering from malaria years ago was due to her becoming impregnated by a Vespiform, who had also given her the Firestone necklace as a means of linking her telepathically with her child. Eddison ultimately left the boy for adoption. The Doctor reveals that child is the Reverend Golightly (Tom Goodman-Hill), and the murderer of the guests; his use of Agatha's works as means for murder was a result of his connection to his mother, who was reading one of Agatha's novels while the alien powers in Golightly manifested themselves for the first time in a bout of anger.Golightly reveals his alien nature, transforming back into a wasp and threatening the guests. Agatha grabs the Firestone necklace and lures the wasp away while driving towards the nearby Silent Pool, with the Doctor and Donna giving chase. When they catch up to Agatha, Donna grabs the necklace from Agatha and throws it into the water, the wasp diving in after it and drowning. However, due to her brief possession of the necklace, Agatha herself is lured to the water, but Golightly releases her from its possession before he dies, causing her to fall unconscious on land. The Doctor realizes this is the event that gave her the amnesia during her disappearance, and uses the TARDIS to quietly drop her near the Harrogate Hotel ten days later. As the two return to the TARDIS, the Doctor shows Donna that not only that Agatha's works will be remembered for a long time by producing one of her novels, Death in the Clouds, published in the year five billion, but that her amnesia may not have been complete, with wasps being a significant plot element of the work.

The Doctor's Daughter

Continuing from where "The Poison Sky" left off, the TARDIS kidnaps the Doctor and his companions Donna Noble and Martha Jones; and whisks them away to the planet Messaline, in the midst of a generations-long war between humans and the Hath, fish-like humanoids. Emerging from the TARDIS, Martha reveals that although she wanted to be home, she did miss the adventure. They are then met by armed men working for General Cobb. Cline, the leader of the men, forces the Doctor's hand in a progenation machine, using his DNA to create a soldier — Jenny, the episode's titular character.
Martha is captured by the Hath, and, following an explosion caused by Jenny, the Doctor, Donna, and Jenny are imprisoned by General Cobb because of the Doctor's pacifist attitude. Each of the primary characters learns about the war from its belligerents; the Hath and humans were initially meant to live in a peaceful colony, but were divided over a dispute about "the Source", believed by each side to be the breath of their creator. When the Doctor unwittingly reveals the location of the Source, the two sides race to claim it first. The Doctor, Donna and Jenny escape their prison cell when Jenny distracts Cline by flirting with him and holding him at gunpoint.
The Doctor is initially dismissive of Jenny but becomes closer to her as the episode progresses. Donna is also intrigued by a series of numbered plaques she notices in each room. When they reach the location of the Source, it turns out to be a terraforming device within a colonising spaceship. They discover that the plaques represent the date the building was completed, which was a mere seven days previous; the humans and Hath have bred so many generations through the progenation machines that their own history degraded into myth. The original casus belli was a power vacuum caused by the death of the mission commander.
Meanwhile, Martha has been making her own way to the Source via the surface with a Hath who dies saving her from quicksand; devastated she reunites with the Doctor and Donna near the Source shortly before both armies arrive.
The Doctor declares the war to be over, and releases the terraforming agent; everyone present lays down their weapons, with the exception of Cobb who tries to shoot the Doctor. Jenny steps in the way and takes a bullet to the chest. The Doctor cries as he holds her, lovingly telling Jenny they have many journeys to take as father and daughter. She replies she'd like to do that, and finally passes away. Enraged, the Doctor picks up Cobb's gun and holds him at gunpoint, to the shock of Martha and Donna, but refuses to shoot him. Angrily, the Doctor orders the humans and the Hath to build their society on the basis of 'the man who never would'.
With Jenny to be given a proper burial by Cline and the Hath, the Doctor takes Martha home. Martha says she can't handle the death and devastation any more and warns Donna that life with the Doctor can be dangerous. Donna nevertheless resolves to stay with the Doctor indefinitely. As Donna leaves them to walk on their own, the Doctor rehashes one of his lines from their time together ("We're making a habit of this"), while Martha expresses her sorrow about the Doctor losing Jenny. He remarks that there's always something worth living for before hugging Martha tightly and departing as Martha happily runs inside her home.
Concurrently, on Messaline, Jenny revives. She escapes Messaline, determined to follow in her father's footsteps by resolving disputes and fighting villains (and a whole lot of running).

The Poison Sky

Continuing the narration from "The Sontaran Stratagem", the Doctor and UNIT determine that the ATMOS automotive devices, Sontaran in nature, are creating a lethal gas that is slowly filling Earth's atmosphere. The Doctor and Donna Noble are inside in the TARDIS when the Sontaran clone of Martha Jones informs the Sontarans of its position, allowing them to bring it to their orbiting ship. The Sontarans then disable their teleport pods after informing child prodigy Luke Rattigan, their human agent in construction the ATMOS devices, that they never planned on taking him or his students off-planet and stranding him on Earth. Instructing Donna to stay inside the TARDIS, the Doctor learns that the Sontarans, led by General Staal are seeking to transform the Earth into a place hospitable to their species in order to clone more soldiers in their war against the Rutans. The Sontarans further prevent a launch of nuclear weapons by UNIT against their ship through the Martha clone; the Doctor, realizing that the Sontaran ship would be impervious to the weapons' impact, realizes the Sontarans are instead preventing the disruption of their atmospheric conversion.
UNIT attempts to attack the ATMOS factory, but the Sontarans use an energy field to cause the conventional copper-lined bullets in their weapons to expand and jam the firearms, leaving them helpless as the troops are decimated. UNIT re-engage in a counter-attack using non-metallic bullets, and along with the aircraft carrier Valiant blowing the lethal gas away, puts the Sontarans on the defensive. The Doctor cryptically relays instructions to Donna to re-engage the teleport pods while he goads Staal, and uses the distraction of UNIT's offensive to teleport to the factory and discover the real Martha in one of the Sontaran's cloning devices, deactivating her clone in the process. They return to the Sontaran ship to collect Donna and the TARDIS, and then return to Rattigan's estate, finding the teenager distraught over the potential disaster to Earth that he caused. The Doctor collects the necessary equipment to construct his own atmospheric converter, harmlessly igniting the poison gas across the globe and ending the threat. However, the Doctor is aware the Sontarans will not take their defeat easily and teleports with the converted aboard the Sontaran vessel, planning on activating it and destroying the ship. Staal calls the Doctor's bluff, knowing he would also die, but before anyone can react, Rattigan teleports aboard, forces the Doctor back to Earth, and sacrifices himself by triggering the device, destroying the ship and the Sontarans aboard.
As the ATMOS devices are removed from cars and destroyed across the globe, Martha says goodbye to Donna and the Doctor in the TARDIS and prepares to head home. However, before she can leave, the TARDIS suddenly springs to life, locking the doors and piloting itself to an unknown destination as the jar containing the Doctor's severed hand bubbles.

The Sontaran Stratagem

Martha Jones calls the Doctor to ask for assistance during an investigation by UNIT. Minutes after the TARDIS materialises in contemporary Britain, Martha authorises the raid of an ATMOS (Atmospheric Omission System) factory. The Doctor introduces his companion Donna Noble to Martha and UNIT; Donna instantly befriends Martha, but is concerned about UNIT's ethics and asks the Doctor why he is associated with them; the Doctor ambiguously replies he used to work for them in the late twentieth century.
ATMOS is marketing a satellite navigation system developed by child prodigy Luke Rattigan. The system also reduces carbon dioxide emissions to zero; UNIT requested the Doctor's help because the technology is not contemporary and potentially alien. UNIT are also concerned about fifty-two simultaneous deaths occurring spontaneously several days before the narrative. The Doctor travels to Rattigan's private school to investigate the system, and discovers that the episode's events are being influenced by the Sontarans.
The Sontarans depicted in the episode are part of a battlegroup led by General Staal, "the undefeated". Instead of an instant invasion, they are tactically approaching an invasion with a combination of human clones, mind control, and ATMOS; Martha is captured by two of the controlled humans and cloned to provide a tactical advantage against UNIT.
A subplot depicts Donna returning to her home to warn her mother Sylvia and grandfather Wilfred Mott about the Doctor, having been advised to do so by Martha. Concerned about the implications of telling the truth, Donna reneges from warning her mother. At the end of the episode, the Doctor investigates the ATMOS device attached to Donna's car and discovers a secondary function: the device can emit a poisonous gas. Wilfred attempts to take the car off the road, but is trapped when Staal activates all 400 million ATMOS devices installed in cars worldwide. The episode's cliffhanger depicts Donna shouting for help while the Doctor stares helplessly at a street full of cars emitting the gas, while on their ship orbiting the planet, the Sontarans prepare themselves for battle.

Planet of The Ood

The Doctor uses the TARDIS to land at a random point in time and space. On leaving the TARDIS, he and Donna find an injured Ood, a species the Doctor previously encountered in "The Impossible Planet" and "The Satan Pit". Just before he dies, the Ood's eyes turn red and it makes a lunge for the Doctor, startling him with his ferocity. The Doctor muses that they were being influenced by the Devil on their previous encounter, and concludes that on this occasion they must be being influenced by a different and closer being. The Doctor and Donna find an industrial complex controlled by Ood Operations, who have been selling the Ood as a servant race since 3914. They have even been making certain upgrades to their translation sphere. These include standard voice and a more seductive female voice. One even has been adapted with comical expressions such as "D'oh" from Homer Simpson of The Simpsons. The Doctor locates their position: the Ood-Sphere in 4126 close to the Sense-Sphere of the Sensorites.
The "Red Eye" phenomenon is affecting other Ood on the planet: several people have been killed in the weeks prior to the narrative. During the outbreak, the Ood state that "the circle must be broken". Ood Operations noted an increase in the phenomenon, and considered it to be similar to foot-and-mouth disease; CEO Klineman Halpen tells the Doctor the method of killing is identical.
Throughout the episode, Donna becomes sympathetic to the Ood and is horrified by their status as slaves. The Doctor also takes an interest in the Ood, noting that no species could naturally evolve to serve. He also feels he had overlooked them on their previous encounter. He and Donna travel through the complex and find a batch of uncultivated Ood. Instead of a translation sphere, they hold a "hind brain" that gives them individuality, and once removed, they become subservient; the Doctor castigates Halpen for lobotomising them.
The Doctor and Donna are captured by Ood Operations' security force. Shortly after, the Ood begin a mass revolution, and the complex is evacuated. The Doctor follows Halpen to a locked warehouse. The warehouse contains a large brain, which completes the Ood's collective consciousness. The brain's control of the Ood is limited by a circle of pylons emitting a forcefield. Halpen plans to kill the brain, and by extension, all of the Ood, but is stopped by a joint effort between the Doctor, Donna, Dr Ryder, and Halpen's personal Ood, Ood Sigma; Ryder, an activist for "Friends of the Ood", had slowly infiltrated the company over the course of ten years before he was able to gain access to the controls for the pylons and change them to their minimum setting, while Ood Sigma used Halpen's hair-loss medication to slowly convert Halpen into an Ood.
The Doctor shuts down the circle, freeing the Ood and allowing them to all rejoin in a telepathic collective. Before leaving, Ood Sigma promises to include the "Doctor-Donna" in the Ood's song; stating that "the Wind, the Ice and the Snow" shall remember and honour their names forever, but comments that the Doctor's song may soon end.

The Fires of Pompeii

The Doctor and Donna Noble arrive in what the Doctor believes to be Rome in the first century AD. After an earthquake and witnessing a nearby mountain begin to smoulder, he realises he has in fact materialised in Pompeii on 23 August, AD 79, one day before the eruption of Mount Vesuvius. When he and Donna returns to the TARDIS' location, he is told it was sold to a Lucius Caecilius Iucundus, a marble sculptor.
The episode's antagonists are the Pyrovile, giant rock-like creatures resembling golems whose home planet was "lost". They operate secretly; the Sybilline Sisterhood act as their proxies. They use the Sisterhood, which incorporates a high priestess and her acolytes, Spurrina, and Thalina (Lorraine Burroughs), to make prophecies while slowly converting them to stone. The Sisterhood is inducting Caecilius' daughter Evelina and is allied to the local augur Lucius. The Doctor is disturbed by their knowledge of his and Donna's personal lives, and by Lucius' latest commission, a marble circuit board.
The Doctor breaks into Lucius' home and discovers that he is creating an energy converter. He is accosted by Lucius, who sends a Pyrovile to kill the Doctor. The confusion allows the Sisterhood to kidnap Donna briefly; the Doctor follows them and frees Donna. They escape into the Sisterhood's hypocaust system and travel into the centre of Mount Vesuvius.
Mount Vesuvius is being used by the Pyrovile to convert the human race to Pyroviles, in an effort to conquer Earth. The Doctor realises the volcano will not erupt if the energy converter is running, and with Donna's encouragement, subsequently switches it off, triggering the eruption of Vesuvius, considering Pompeii's destruction and the death of its population the lesser of two evils. The Doctor attempts to leave, but Donna convinces him to save Caecilius and his family, whom he then takes on board the TARDIS. The family, The Doctor, and Donna then watch Pompeii's destruction from a vantage point. The Doctor assures the family that Pompeii is never forgotten before leaving with Donna. As he watches the destruction, Caecilius comments that it is the wrath of Vulcan and coins the word "volcano" to describe it.
The last scene takes place six months later in Rome. Caecilius' family are shown to be successful: Caecilius is running a profiting business, Evelina has a social life in comparison to her seclusion in Pompeii, and his son Quintus (Francois Pandolfo) has given up the wasteful life he led in Pompeii and is training to become a doctor. Before Quintus leaves, he pays tribute to the family's household gods, whose statues are in the form of the Doctor, Donna and the TARDIS.

Partners In Crime

The episode primarily focuses on Donna Noble, a previous companion who appeared in "The Runaway Bride". After her encounter with the Doctor, she became disenchanted with normal life and regretted declining his invitation to travel in the TARDIS. She started investigating conspiracy theories in the hope she would find him. She confides her regrets to her grandfather Wilfred Mott, an amateur astronomer who met the Doctor before in "Voyage of the Damned".
The episode concerns Adipose Industries, which is marketing a diet pill to London's population with the slogan "the fat just walks away". Believing the treatment to be otherworldly, the Doctor and Donna investigate the company separately, and find that the slogan is literal—the pills use latent body fat to parthenogenetically create the Adipose, small white aliens which spawn every night, removing a little of the host's body fat each time. In an emergency, multiple Adipose can spawn by using all of the body's organic tissue, killing the host. When the Doctor and Donna meet, they are confronted by Miss Foster, an alien who is exploiting Britain's overweight population to create the Adipose for the Adiposian First Family. Miss Foster mentions that the Adipose species "lost" their breeding planet and hired Foster to find a replacement; she chose Earth, knowing that it was illegal.
Foster accelerates her plans, feeling threatened by the Doctor's invocation of galactic law and fearing he may inform the "Shadow Proclamation", an interplanetary police force. Throughout London, the Adipose begin to spawn, soon numbering several thousand. The Doctor and Donna prevent total emergency parthenogenesis occurring, while the remainder make their way to Adipose Industries. The Adiposian First Family use their spaceship to collect the Adipose, but kill Foster to hide any evidence they used Earth illegally. The Doctor refrains from killing the Adipose because they are children; Donna notes that his previous companion Martha Jones made him more human, citing his infanticide of the Racnoss in their previous encounter.
At the end of the episode, Donna accepts an offer to travel in the TARDIS. She makes a detour to leave her car keys in a safe location for her mother Sylvia, and asks a blonde woman to help Sylvia find the keys. The woman turns towards the camera, revealing her to be Rose Tyler. She fades from view as she walks away from the area. In the final scene, Donna asks the Doctor to fly by her grandfather, Wilfred, who sees her and celebrates on his allotment.