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Classic Who S4 • Serial 2 · (3/4 episodes intact)
The Tenth Planet
Other variations of this story: The Tenth Planet (Animated Reconstruction), The Tenth Planet (BBC Audio Soundtrack)
The Doctor's TARDIS lands at the Snowcap space tracking station in Antarctica in December 1986. A routine space mission starts going wrong. When the base personnel's suspicions are roused, the Doctor informs them that the space capsule is being affected by the gravitational pull of another planet — a tenth planet in the Solar system.
The loss of a routine space mission and the appearance of that planet in the sky herald the arrival of the Cybermen, who are intent on the destruction of the Earth and the conversion of all humans into Cybermen. Ben and Polly fight to save the world, but it is a battle that may be the Doctor's very last.
4 Episodes:
In 1986 a new planet appears in the Solar System which turns out to be a long-lost twin of Earth's named Mondas. Its inhabitants are the Cybermen.
The Doctor's warnings are ignored and the Cybermen take over the base, hampering the crew's efforts to help Zeus IV.
With the Doctor out of action, it is up to Polly, Ben and Barclay to stop Cutler using the Z-Bomb and devastating half the world.
The Cybermen take over the base again, apparently to stop the humans using the Z-Bomb, but then the Doctor realises they intend to use it themselves to destroy Earth.
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