The Doctor, Vicki and Steven arrive on an arid planet where they meet the beautiful Drahvins and the hideous Rills. Each has crash-landed after a confrontation in space. The Rills are friendly, compassionate explorers. The Drahvins are dull-witted, cloned soldiers, terrorised by the intelligent, warlike matriarch Maaga.

Advertising golden boy Andrew Quint is fed up with his fabulously successful life. In very dramatic fashion, he quits his job to return to writing for a small literary magazine. He wants to leave his former life behind, going as far as saying good-bye to his wife and mistresses. He finds, however, that it's not so easy to escape the past.

After a scientific experiment goes horribly wrong during a demonstration, a scientist finds himself trapped in an alternate reality that bears some similarities to our own, but also has some striking differences. In this other reality the Second World War had never occurred, mankind had not yet traveled into Space and Mt. Everest had not yet been conquered, just to name a few things. Also in this other reality he is no longer a scientist but rather a well known author. After a personal tragedy in this alternate world, he finds himself back in his own world and desperately trying to locate the woman he fell in love with in the other world. Little does she know, however, that her life depends on him finding her.

Percy Pointer's passion in life is the theatre, and all his spare time is devoted to the play he is writing. When it's finished it arrives on the desk of a London impresario, when he wants to stage a flop.