The Likely Lads was a black and white British sitcom created and written by Dick Clement and Ian La Frenais, and produced by Dick Clement. Twenty-one episodes were broadcast by the BBC, in three series, between 16 December 1964 and 23 July 1966. However, only eight of these shows have survived.

The TARDIS brings the Doctor, Susan, Barbara, and Ian to the planet Skaro where they meet two indigenous races — the Daleks, malicious mutant creatures encased in armoured travel machines, and the Thals, beautiful humanoids with pacifist principles. They convince the Thals of the need to fight for their own survival.