Jack Martin (Danny Kaye) is an American entertainer. He has a skit in his show, making fun of the Captain Henri Duran (also Kaye). On one particular evening, the Captain and his wife, Lili (Gene Tierney) come to see Jack's impersonation. To the surprise of the couple, the act is amazingly realistic. Backstage, the Captain meets Jack's girlfriend, Colette (Corinne Calvet), and invites her to a party he is going to hold. Colette declines.