Manuela, the daughter of a wealthy couple from Bari, has disappeared without a trace and, to her parents' despair, the police have already closed their investigation. Counsellor Guerrieri reluctantly takes on an unusual assignment: to seek new evidence to force the police to re-open the case. A job more suitable to a private detective, but a job that leads him to Nadia, a former client, and to the tempting Caterina, Manuela's best friend, exquisitely too young for the jaded Guerrieri...