The story introduces Lalla Ward as the newly-regenerated Romana. The TARDIS lands the Fourth Doctor and Romana on a strangely familiar planet. There, they meet the android Movellans, who are locked in a war with the Daleks. The planet is Skaro, and in a bunker sits an enemy long thought dead — Davros, creator of the Daleks.
Man of leisure Sir Richard (Edward Petherbridge) receives notification that his Uncle has died, bequeathing him his stately country manor and all its lands. On his return to England he immediately sets about taking stock of all legal matters concerning his new property, but during these dealings Sir Richard seems to be more than a little distracted, he hears strange noises from...
The Doctor and Romana are enjoying a holiday in Paris, 1979, when they become aware of a fracture in time. During a visit to the Louvre to see da Vinci's Mona Lisa, the Doctor purloins from a stranger, Countess Scarlioni, a bracelet that is actually an alien scanner device.
He, Romana and a private detective named Duggan are then 'invited' to the chateau home of Count Scarlioni...
The story revolves around the planet Shada, on which the Time Lords have constructed a high security prison for some of the Universe's most dangerous criminals. Skagra, a flawed genius from the planet Dronoid, wishes to create a "Universal Mind" in which all the pooled knowledge of the universe's greatest criminals would be placed at his disposal and with which he intends to ta...
