The son of a sailor, who seduced and abandoned the mother, doesn't get along with the new man, a clockmaker, the woman weds. He turns to delinquent behavior and smuggling and leaves on a ship, just like his father.

Young Monique leaves the preventorium where Doctor Delaunay has lovingly cared for her. A painful return. Her mother Denise lives with Eugène, a handsome, disreputable young man who's easy to please and, on occasion, won't hesitate to steal. He hangs around Monique, excited by her freshness, until the day he is shot on suspicion of the disappearance of a mobster. Monique is reunited with Dr Delaunay, much to the satisfaction of her guardian Gilbert, known as Patte-en-moins, owner of the local bistro.

Nightclub entertainer Jean Clery has just become engaged to Lili, his attractive psychoanalyst. Meanwhile, the nightclub where he works is being used by a counterfeit ring, and Paris police suspect owner Paul Latour of being the ringleader. Finding it expedient to leave town, Paul leaves his "baby" daughter with Jean...who discovers too late that she's a wild, carefree, shapely sex-kitten with a talent for getting Jean into amusing scrapes.