Tridan Lagache has spent his life at Club Med, changing friends every 8 days. At the age of 50, he resigns from the Mexican vacation club where he was born, determined to find, 42 years later, his great childhood love, Violette. He arrives in Paris, naive and lost, but happy to be lodged with Louis, a half-brother he didn't know existed. To get rid of a cumbersome Tridan, Louis begs one of his conquests, Roxane, to pass herself off as Violette, whom Tridan thinks he recognizes at first sight.