The TARDIS falls through a CVE into E-Space and arrives on the planet Alzarius. There the inhabitants of a crashed Starliner and a group of young rebels called the Outlers, led by a boy named Varsh and including his brother Adric, are being terrorised by a race of Marshmen who emerge from the marshes at a time known as Mistfall.

The Doctor discovers the English King is a shape-changing android called Kamelion!

The Doctor and a newly-regenerated Romana arrive on Skaro and discover that the Daleks are using explosive charges and a group of humanoid slave workers to mine the planet in search of their creator, Davros. A stalemate has arisen in an interplanetary war that the Daleks are waging against the robotic Movellans, and their hope is that Davros will be able to give them the edge.

The Doctor discovers that the captain of the pirate ship is actually a concentrated beam of mental energy.

The Doctor manages to eject Wrack and pilot her vessel to victory.

The doctor's (Peter Cushing) TARDIS time machine takes him, his granddaughters and a friend (Roy Castle) to war-ravaged planet Skaro.

Dr. Who (Peter Cushing), his granddaughter, his niece and a London bobby (Bernard Cribbins) find that Daleks have invaded 22nd-century Earth and are turning humans into slaves.