Everyone's favourite time traveller returns to do battle with his greatest foes. Years after his peremptory departure from Totters Lane (see the first ever story, 'Doctor Who: An Unearthly Child'), the Doctor (Sylvester McCoy) returns to 1963 London to discover that the military have been called in to do battle with an alien invasion force at Coal Hill School. The aliens turn out to be none other than the Daleks, whose Emperor wants to obtain a Gallifreyan stellar manipulator - known as the Hand of Omega- which was left in the Doctor's care. However, a group of renegade Daleks are also after the Hand, in league with a fascistic human group. Can the Doctor defeat both Dalek armies and prevent the Hand of Omega being misused?

The Doctor (Tom Baker) and the newly-regenerated Romana land on a strangely familiar planet and investigate the drilling that is going on there. The Daleks are searching for their creator, Davros (last seen in 'Genesis of the Daleks'), in the hope that he can assist them in their war with the Movellans. The Doctor has to reach the evil Kaled scientist before the Daleks, but just who can he trust?

Another adventure for the sixth incarnation of the intrepid time traveller. The Doctor (Colin Baker) and Peri arrive on the planet Necros to pay their last respects to deceased agronomist Arthur Stengos. They discover that his final resting place - Tranquil Repose - is in fact a front for a Dalek farm run by the Great Healer, who turns out to be none other than the Doctor's old foe, Davros.