When thief Gaston Monescu (Herbert Marshall) meets his true love in pickpocket Lily (Miriam Hopkins), the cunning pair of jewel thieves embark on a scam to rob a lovely Parisian widow and perfume company executive named Mariette Colet (Kay Francis). But when Gaston becomes romantically entangled with Mariette, the larcenous ruse is jeopardized and Gaston is forced to choose between two beautiful but vastly different women.