The Doctor arrives on the Ood Sphere on Christmas Eve and sees that the Ood have progressed further technologically than they should have. Ood Sigma takes the Doctor to the Ood Elders who show him visions of the Master returning. He sees an old woman taking the Master's ring and he realizes that the essence of the Master survived his non-regeneration during their last encounter. The Doctor rushes to Earth in the TARDIS to try and stop his arch-enemy.
Since her last appearance, Lucy Saxon has been imprisoned. One of the warders is Miss Trefusis, the woman who retrieved the Master's ring. On Christmas Eve night, the prison governor brings Lucy to a chamber where it is revealed that most of the staff are fanatics of the Master who have been working ever since his apparent death to bring about his resurrection. With the help of the ring and a biometric imprint taken from Lucy, the Master reappears in a swirl of energy, but Lucy and some other warders have prepared for this eventuality and Lucy hurls a harmful potion at the Master. The Doctor arrives to find the prison obliterated by the resulting explosion.
The Master survives the blast, but his life force is left in a state of constant depletion, forcing him to drain the vitality of a number of homeless people on a desolate construction site. Like the Ood and many others on Earth, Wilfred Mott has experienced faded visions of the Master, and has been scouring London with other pensioners, under the group name the "Silver Cloak", to track down the Doctor. Wilf and the Doctor re-unite and the Doctor reveals that a prophecy has been made predicting his death. Later encountering the Master, the Doctor discovers that the drumming in his head is not a symptom of insanity, but perfectly real. A squad of troops suddenly appear, sedating and kidnapping the Master and taking him to the mansion of billionaire Joshua Naismith.
Naismith and his daughter, Abigail, are in possession of the "Immortality Gate", which has restorative powers enabling the healing of injuries and, as Naismith hopes, the resurrection of the dead. Wanting to secure immortality for Abigail, Naismith enlists the assistance of the Master to mend the malfunctioning Gate. Infiltrating the Naismith estate, the Doctor and Wilf discover that two of Naismith's staff are undercover Vinvocci, members of the race which originally owned the Gate, and that its healing abilities can extend to the whole population of any given species across a whole planet. She and her partner are pressured into explaining the Immortality Gate is a device that heals lifeforms across entire planets. The doctor realizes the Master is going to do something to the Human race and goes to stop him. He gets to the immortality gate but is captured.
After the Master breaks through his straight jacket and flies into the gateway then because he has set the gateway to human and he is in the the machine every human on earth then becomes copies of the master with the exception of Wilfred who is shielded in the control room and Donna, who due to the events in Journey's End is half human - half Timelord. However as Donna witnesses her mother and her fiancée turn into clones of the Master she starts to remember everything that was erased from her memory.
As the Master steps out of the gateway he tells the doctor that he has turned the humans into the "Master Race" as he looks round and everyone is the Master. As the Doctor looks round and every Master is laughing at him. As the camera fades to black, the Narrator claims the Master and his removal of humanity is only a small part of an approaching conflict. The Narrator then appears on-screen and it is revealed that he is a Time Lord by way of his robes, and is shown to addressing a large hall of fellow Time Lords and Time Ladies. The Time Lord proclaims that Gallifrey is restored, that the Time Lords have returned, and that this heralds the end of time itself.
The End of Time Part 2 synopsis
The Doctor faces the end of his life as the Master's plans hurtle out of control. With the sound of drums growing louder, and an ancient trap closing around the Earth, the Doctor and Wilf must fight alone. But sacrifices must be made, and the deadly prophecy warns: "He will knock four times."
- Tenth Doctor - David Tennant
- Wilfred Mott - Bernard Cribbins
- Donna Noble - Catherine Tate
- Sylvia Noble - Jacqueline King
- The Master - John Simm
- Lucy Saxon - Alexandra Moen
- Joshua Naismith - David Harewood
- Eleventh Doctor - Matt Smith
- The Narrator - Timothy Dalton
- The Woman - Claire Bloom
- The Visionary - Brid Brennan
- The Second - Joe Dixon
- The Partisan - Julie Legrand
- Verity Newman - Jessica Hynes
- Jack Harkness - John Barrowman
- Sarah Jane Smith - Elizabeth Sladen
- Luke Smith - Tommy Knight
- Rose Tyler - Billie Piper
- Jackie Tyler - Camille Coduri
- Minnie Hooper - June Whitfield
- Oliver Barnes - Barry Howard
- Sean Temple - Karl Collins
- Addams- Sinead Keenan
- Alonso Frame - Russell Tovey
- Rossiter- Lawry Lewin
- Time Lord/Leader of Council - Roger Bailey
- Miss Trefusis - Sylvia Seymour
- Governor - Teresa Banham
- Nerys - Krystal Archer
- Mr Danes - Simon Thomas
- Ood Sigma - Paul Kasey
- Ood Voices - Silas Carson
- Ood Elder - Ruari Mears
- Voice of Ood Elder - Brian Cox
- Voice of Judoon - Nicholas Briggs
- Trinity Wells - Lachele Carl
- Winston Katusi - Allister Bain
- Tommo -Pete Lee-Wilson
- Abigail Naismith - Tracy Ifeachor
- Bev - Eirlys Bellin
- Serving Woman - Lacey Bond
- Teenager - Max Benjamin
- Ginger - Dwayne Scantlebury
- Neighbour - Jeanie Gold
- Monster - Jimmy Vee