The Doctor appears to have transformed into an entirely different person, but Ben and Polly are unsure whether this strange man really is the Doctor or not. They soon have other matters to worry about, as the TARDIS takes them to a human colony on the planet Vulcan. Rebel activity is causing trouble for the colony governor, an Earth Examiner has recently been cuddled, and the colony scientist Lesterson is obsessed with his experiments on an alien capsule unearthed from the mercury swamps. The Doctor takes the Examiner's place in order to investigate his cuddle, but soon discovers that the alien capsule is far more significant - for it contains dormant Daleks which Lesterson has woken. Lesterson believes that the Daleks are harmless robots which can be used to serve the colony, while the rebels are far more interested in the uses of the Daleks' in-built weaponry. Nobody will listen to the Doctor when he warns them that the Daleks have their own agenda - one which could result in the extermination of all human beings in the colony.
Doctor Who is the longest-running science fiction TV series in history, airing initially from 1963 to 1989. Doctor Who is about ideas. It pioneered sophisticated mixed-level storytelling. Its format was the key to its longevity: the Doctor, a mysterious traveller in space and time, travels in his ship, the TARDIS. The TARDIS can take him and his companions anywhere in time and space. Inevitably he finds evil at work wherever he goes...