(The four travellers rush to stand up against the wall next to the doors. (They laugh.) BARBARA: Well, everything seems quite normal. Come on! DOCTOR: Yes, exhibits in a space museum. He steps back to his companions.) MUSEUM ENTRANCE
(IAN and BARBARA are the first of the travellers who reach the main double doors of the museum.) Now isn't that extraordinary? On a museum. The dust of the planet starts to affect VICKI and she builds up to a sneeze that BARBARA stops. They can see us. XEROS
(The planet is dry and arid. You know, I think the TARDIS jumped a time track...and ended up here - in this fourth dimension.
Plan: A: the planet Xeros; Q: Where do the Doctor and his companions arrive after the TARDIS jumps a time track? A: the planet; Q: What do the Morok invaders rule? A: exhibits; Q: What are the Doctor and his companions' future selves displayed as in the museum? A: the warlike Morok invaders; Q: Who now rules the planet? A: Vicki; Q: Who helps the native Xerons obtain arms and revolt against the Moroks? A: The revolution; Q: What succeeds and the travellers go on their way, confident that the future has been changed? Summary: The TARDIS jumps a time track and the travellers arrive on the planet Xeros. There they discover their own future selves displayed as exhibits in a museum established as a monument to the galactic conquests of the warlike Morok invaders who now rule the planet. When time shifts back to normal, they realise that they must do everything they can to avert this potential future. Vicki helps the native Xerons obtain arms and revolt against the Moroks. The revolution succeeds and the travellers go on their way, confident that the future has been changed.