Author of the best-selling crime novel Le Poulet se mange froid (Chicken Eats Cold) under the pseudonym Sam O'Connor, Inspector Bourdieux's daughter, Agnès, is unwillingly drawn into the gangster ring by two small-minded young misfits, Dédé and Juju. She's not insensitive to the charms of M. Paul, a false kingpin who is in fact a son of a good family and a thrill-seeker. Planning a heist at the home of one of Paul's snobbish friends, she arrests the real Sam O'Connor, an escaped convict, with the help of her father. Then she and Paul confess their love for each other.

Georges Villard, a minor bank employee, is won over by Mr Steve who does him favours, treats him to the high life and introduces him to his wife Florence, with whom he falls in love. Georges is unaware that these generous gifts will cost him dearly.

A modest taylor the women found irresistible inherit a Maison de couture in financial difficulty. Decided to save it he prepare a great collection. But when his wife discovered his relations with one of the mannequin, how would he prevent the scandale without loosing... both of them?!