An ex-pop star is contemplating suicide when he is interrupted by a motorbike accident. On arriving at the scene, he sees that the bike rider is a beautiful young woman, who appears to have amnesia. He responds by pretending to be her boyfriend, naming her Lisa, and inventing a story for them both. They then go off on holiday to the Red Squirrel campsite. But there is more to Lisa than meets the eye, as he is about to find out.