Isabelle (Valérie Lemercier), head of HR for Costa Cruises, has made the cardinal error of having an affair with her boss (Lionnel Astier). But before the inaugural cruise of the company’s flagship vessel, he decides to throw her out of his life and out of her job! Some women seek vengeance with poison, others with firearms or scandal. Isabelle opts for Rémy (Frank Dubosc), a flamboyant loser who has screwed up everything on land, and who thinks that maybe he’ll do better at sea. She signs him up as on-board entertainer. At first, he proves to be the worst nightmare for the Chairman and Cruise Director (Gérard Darmon). But gradually, Rémy finds his way on this floating palace, and with it, love and success. He changes his own destiny and that of all those who sail with him.