Ace and the Doctor visit a planet where the inhabitants have devolved into primitives. The Doctor has a plan to save this former civilisation. He takes Ace to Earth, far in her future. By this time, humans rely on intelligent clothing to perform life's basic tasks for them, such as grooming, and make decisions for them, such as daily diet and whom to marry. Ace accidentally causes a car crash. As she tries to help, the Doctor takes the suit that has been thrown out of the car. He and Ace give it to a young man whom they call Fern.