The director of the Rome office of an American news agency is seduced by his boss' daughter, who subsequently ends up dead at the foot of a cliff. Film adaptation of James Hadley Chase’s 1956 noir thriller novel You Find Him, I'll Fix Him.

Michel takes up pickpocketing on a lark and is arrested soon after. His mother dies shortly after his release, and despite the objections of his only friend, Jacques, and his mother's neighbor Jeanne, Michel teams up with a couple of petty thieves in order to improve his craft. With a police inspector keeping an eye on him, Michel also tries to get a straight job, but the temptation to steal is hard to resist.

An aimless young man is committed to a psychiatric hospital by his father in an attempt to cure him of his delinquent tendencies.