A young Italian is commissioned by the National Statistics Office in his country to carry out a social survey in France, in a large clothing establishment.

Martine is a young woman plagued both by poverty and by uncaring, problem parents who in no way can provide the kind of nurturing that Martine needs during her adolescent years. As a result of her family situation, Martine runs away from home and gets involved with a group of teens and young adults from the wrong side of the moral tracks.

Patterning himself after the American gangster John Dillinger, the criminal (Robert Hossein) is tracked by the inspector (Charles Aznavour), a former childhood friend. Plenty of gunplay and psychology is used to trap the killer. His only tender moments are spent with his girlfriend Stella (Virna Lisi). Dillinger is cornered by the police and kills several innocent victims in a crowd during the shootout. The mob decides to take things into their own hands as they approach the doomed man with a noose when he runs out of bullets.

Following a car breakdown, Miss Annie, director of a weight loss center, meets a certain Mr. Kelvo, a car champion. But instead of helping her, he rapes her. She decides to take revenge and follows him.