In Spain, the former Nazi doctor Klaus tries to commit suicide jumping off the roof of his manor. However, he survives with the entire body paralyzed and dependable of an iron lung with glass sides. His wife Griselda decides to hire a nurse since she does not bear the situation. Klaus asks Griselda to hire Angelo, a mysterious teenager that appears in their house. Angelo befriends Klaus' daughter Rena and sooner it is shown that Klaus was a pedophile that loved to feel the fear of death in young boys before abusing and killing them. Further, Angelo is a disturbed and totally insane victim of his experiments that intends to follow the insanities described in Klaus' diary and incorporate his personality.

A mixture of a psychological study of a ten-year-old boy, an English domestic comedy and a satire on psychologists finds young Johnny Brent, the only child of a pair of psychologists, trading an "invisible watch" to a much-younger child for a large magnet. His nurse/nanny accuses him of stealing and scolds him and he runs away. He soon convinces himself that the police are after him and following several unsuccessful attempts to get rid of the magnet, he presents it to an organizer of a fund-raising campaign for acquiring an iron-lung for the local hospital. The magnet is one of the auction items and finally is mounted on the iron-lung as a tribute to the unknown donor. Meanwhile, the father makes a completely inaccurate diagnosis for the mother of the boy's worries. In the end the boy meets the child he thought had died as a result of losing the magnet, and trades the boy...