On a dark and rainy evening after the cinema, a small two-seater car drives through the old streets of Copenhagen. It is the young doctor Preben Hansen driving his sweetheart home. She is a nanny and works at a daycare centre in the inner city. She is a sweet and lively girl whom her friends call "Peter." In the doorway, "Peter" encounters a drunk man who will later become important in her life. When the daycare center is about to close, the drunk man may step in with a financial helping hand.