Andrea, a nice girl, move from Veneto (north of Italy) to Roma. She is employed as a nurse in a medical practice. She soon is involved in a never-ending game of misunderstanding, couples exchange, sexual seductions.

A police inspector is called to Milan to investigate a murder case since he grew up in the same ghetto as the suspect.

An Italian laborer foils anyone who tries to stop him from selling espresso on the Milan-to-Naples night train.