Kim, le modèle (uncredited)
Alain, "a young wolf", elegant and racy, is maintained by the princess Linzani. At the same time, he goes out with a girl of his age, Sylvie, who despite her bold attitude has never had a lover.
Lucie
In the carefree days before World War I, introverted Austrian author Jules strikes up a friendship with the exuberant Frenchman Jim and both men fall for the impulsive and beautiful Catherine.
FBI agent John Lewis travels in Europe, from Paris to Lisbon, trying to locate a disappeared fellow secret-agent, Mark Lemoine. Soon he has trouble with a violant gang, and is involved with a young French reporter, Michèle Laurent. Finally, the chief of the Secret Service tells Lewis that Lemoine never existed. Instead of ending his mission there, the real trouble starts.
