In 1966, the Doctor and Jamie watch the TARDIS being loaded onto a lorry at Gatwick Airport and driven off. They follow the trail to an antique shop owned by Edward Waterfield (John Bailey), where they see antiques that look new. They are gassed and dragged into a time machine, waking up in 1866, in a house owned by Waterfield’s partner Theodore Maxtible (Marius Goring). The prototype time machine the two men invented allowed the Daleks to seize Waterfield’s daughter Victoria (Deborah Watling) and force him to steal the TARDIS and trap the Doctor.
The Daleks will destroy the TARDIS unless the Doctor helps them breed a race of super-Daleks with human DNA. These creatures turn out strangely, behaving more like human children than Daleks. The Doctor is hoping they will turn the Daleks and make them friendly toward humans. Maxtible travels to Skaro with them, hoping for the alchemical secret of transmuting base metals into gold, but is tortured by the Daleks. Waterfield takes the Doctor and Jamie to Skaro and they are brought before the Dalek Emperor, who plans to reverse the Doctor’s work, which will turn all humans into Daleks.
Maxtible has become like a Dalek in his mind. Efforts are made to do the same to the Doctor, but he is not human, and the process fails. The Doctor is only pretending, and he manoeuvres the Daleks into turning on each other. The rebellion spreads and the Dalek city falls into chaos. Waterfield saves the Doctor at the cost of his own life, so the Doctor promises he will take care of his daughter Victoria, and she is taken aboard the TARDIS as a companion.
The Evil of the Daleks was intended to be the last Dalek story, but the characters are still going strong. It was voted the best Doctor Who story of all time in the 30th anniversary poll in 1993. In 2006, the story was put on as a play to raise money for the New Theatre Royal.