Georges Grigny-Latour, known as "P'tit Parigot", is the son of an academician and captain of the French football team. At odds with his father, he joined Paul Mesnil as a mechanic, whose daughter Lucie he liked very much. Georges discovers that his sister Suzanne's fiancé, Robert de Monterval, Mesnil's main sponsor, threatens to ruin him if Lucie does not become his mistress. Georges still comes to terms with a dark intrigue involving his own mistress, the jealous Gilberte d'Aragon.