Roman police detectives interrogate a series of potential perpetrators in their struggle to determine whom to arrest for the brutal murder of a beautiful prostitute whose body is discovered in a park on the day of a torrential rainstorm. One by one, the prime suspects -- girl-crazy teenager Nino, pickpocket Canticchia, a soldier on leave, a tourist and a pimp -- recount the events of the day to the police, each insisting he is innocent.

A doctor running a health clinic by the sea is convinced that women are the cause of the disturbed behaviour of his (male) patients. We get to follow the adventures of the patients during a day on the beach.

Italy, Sixties. A four-storey beach resort, and they look for the man of their life. Will they succeed?

Professor Fabius has found a way of transferring his personality to another person and he transfers his to the body of Giacinto Floria, a nice teacher in a women's college. Poor Giacinto becomes a sex maniac to the puzzlement of his girlfriend Mafalda.