Martine is searching for her sister that disappeared mysteriously. Lequévic agrees to help her.

Madeleine Lebeau, a woman who charges for her easy virtue, has a plan that has some of her customers paying more than others; she tells them she is pregnant and, to avoid complications, the men pay her money and don't hang around for the birth. Yves Furet, a shiftless gambler, who not only encourages her in her business ventures but is also her fiancée, shares the fruit of her non-labor. She latches onto a wealthy widower, Henri Vilbert, who throws her a curve-ball when, after she tells him she is pregnant, he is overjoyed as he has fallen in love with her and is looking forward to becoming a father. She plays along for a while, but becomes ashamed when she sees how Vilbert is devoting his whole life to a child that she isn't carrying. She fakes a miscarriage and his kindness makes her feel guilty and she confesses, but he doesn't believe her. So she tries another plan.

Colette gives up her studies to become a cabaret dancer. She breaks with her fiance who does not approve of her choice.

A GI on furlough attends a Folies-Bergères show. He falls in love with a dancer, Claudie, the star of the theater.

Two third-rate actors, longing to be famous, try to make the headlines by feigning a murder.

A man of of principle leads a double life: one for his mistress and one he takes home to his wife.