A comedy poking fun at earlier 1930s American crime films: A society lady goes after a gang of outlaws and lands up becoming involved romantically with a gangster.
Father Lebonnard, a former watchmaker who made a fortune, remains simple while his wife is only dreaming of worldly affairs and pushes his son Freddy to marry Bianca, the daughter of the Marquis de Rocafort, their neighbor. She feeds a similar project for her daughter Mariella.