Ex-convict Georges Manda has a job and yields to the world determined to go. Struggling to completely shake his connections with the undercover, he meets with a former prison mate, elderly gangster Félix Leca, who presents him to his mistress, the candy however safeguarded Marie"Casque d'Or". Marie and Georges fall into a separate relationship, forcing Félix to accomplish every thing in his power to ruin the bunch.