After a disappointment in love, Alain tells his mistress how he gradually sank into libertinage: from his beginnings with a teacher in art history, then with a supermarket saleswoman, until his discovery libertine parties.

Francis makes a living from his charms, satisfying a large and varied clientele. His gigolo activity is beginning to tire him. A couple of perverted customers, wanting to see him make love with their dog Rita, decide to give up for good. He joins Martine, a healthy, well-balanced young woman.