Yvonne Ménard

Paris, France, December 1946. Jenny Lamour, an ambitious cabaret singer, and Maurice, her extremely jealous pianist husband, become involved in the thorough investigation of the murder of a shady businessman, led by Antoine, a peculiar and methodical police inspector.

Isabelle is a lawyer who has Flip, a private detective, convicted of speeding. But shortly after, a murder is committed of which Isabelle's best friend is suspected. To save her, Isabelle is forced, despite her reluctance, to ask Flip for help, who agrees to look for the culprit.

Bert and George Bernard, two American comedians, are asked by a solicitor to trace a rich heiress whose initials are tattooed on one of her thighs. All they know about her is that she is a chorus girl. This fact particularly suits Bert who is a fan of shows with light-footed and lightly dressed girls. Combining business with pleasure, the two men wind up finding the rare bird.