Claude, a penniless young engineer will come into his uncle's heritage on the only condition that he marries one of his cousins. Too bad because the girl he loves, Isabelle, is not one of them... But money is money and Claude goes in search of one of the three cousins he might marry. The first one, Joséphine, a Martinican, already has a lover. The second one, Conchita, is Spanish and Claude, mistaken for a smuggler, must run away from her. As for the third potential wife, Sophie, who lives in Tyrol, Claude has known her since she once saved his life when he was about to commit suicide. Will she be the right one? And what about Isabelle?