The Brain of Morbius, Part One

The Tardis lands on the bleak planet Karn, in a spaceship graveyard, where The Doctor and Sarah find a evil scientist called Doctor Solon is constructing a new body for the brain of a evil time lord known as Morbius, whom The Doctor thought was executed by the high council on Gallifrey. Where Morbius with his new body plots to rule the galaxy.