Serge, a successful television commercials producer in his early 40's, travels to Venice to enter his films in a festival. Dissatisfied with his life and his marriage, Serge meets Evelyne, a pretty 18-year-old English girl, and makes her his mistress. He rents an apartment and lives with her while waiting for his divorce. Evelyne soon tires of him, however, and abandons him for a Venetian speedboat driver. In search of companionship and consolation, Serge picks up another young woman.