Innocents of Paris (1929)

Maurice, a humble Parisian junk dealer who sells some of his wares at the Flea market, saves a boy from drowning. The boy's aunt Louise is grateful and wins Maurice's affections, but the lad's grandfather despises him. The jaunty junk man gets a great offer to sing in an important show and launch a theatrical career, but Louise is against it and at length, he must choose between the two.