François Chotard, wholesale grocer, gives his daughter in marriage to Julien Collinet, a writer who prefers dreaming to working, a situation conducive to quarrels between the son and the father- in-law. Until the day when Julien receives the Prix Goncourt, prestigious literary award. Chotard has a sudden change of heart.

Town trollop Safia, much against her better judgment, falls in love with Matteo, a beggar and mystic in the native quarter of Sirocco. She flees to France, first as the mistress and then wife of a wealthy archaeologist, and bears him Matteo's child, whom he believes to be his own. Complications arise years later when Matteo finds Safia, and a ring of blackmailers uncover her past and exposes her to her husband.

Paris, 1937. Winckler kills his enemy Gordon, a Chicago mobster, from the stage of a Parisian music hall, where he performs telepathy. He pays another artist, Helene, so that she tells the police they've spent the night together, which doesn't fool Callas, the police officer who investigates the murder. He hires one of his fellow officers in order to seduce Helene.

A propaganda film of the communist party of France, showing how the comrades help the proletariat against the capitalists.