Le Cœur sur la main (1949)

Léon Ménard, the village verger, is a decent young man whose hobby is to play the accordion. One day he is fired for having accompanied Mary Pinson, a singer deemed scandalous by the right-minded parishioners. Blinded by his love for Mary, Léon follows her to Paris where he becomes her plaything. With Mary's complicity, a gang of swindlers make him the puppet proprietor of a night club. But Léon can't live in a fool's paradise forever and soon finds himself on the street, forsaken and desperate. Luckily, the manager of a circus notices him while he is busking and he hires Léon at once. Not only will success come to him but he will win the love of sweet Solange.