A commander suspects his wife of infidelity, when she turns to a subordinate officer to help her against someone threatening to blackmail her about her troubled past.

In order not to compromise the great music hall star with whom he spent the night, a man is accused of a murder he did not commit.

The many difficulties of a couple to harmonize, between the need for independence of one and the brutality of the other...

A poor disgraced girl, belonging to a gang of criminals, is morally transformed by a cosmetic operation that makes her beautiful.

Jacques de Nisson, a rich man, has a new mistress, Lucie Cavelier. Which does not prevent him from courting Florence, the wife of his lawyer friend Forestier. One day, Jacques is found murdered and chief-inspector Candély is sent on the spot to investigate. Jean, the victim's butler, Lucie as well as Florence are suspected in turns but the real murderer is finally identified thanks to his fingerprints.

During a transvestite ball, a young provincial meets Fanny Legrand. A great love is born between them. Later, the young man learns that Fanny was a great coquette. He leaves her, he comes back, he forgives. But when he embarks for America, Fanny does not follow him.

Mr. and Mrs. Noblet run a boarding house on the French Riviera. One day, they are led by circumstances to welcome a little boy Pierre, whose father is in jail, into their home. Which makes Louise Noblet all the happier as she can't have children herself. But, after a while, Pierre's father is released from prison and reclaims his son... Time passes and Pierre, now a young adult, lives in Paris more or less on the wrong side of the law. He has a mistress, Nelly, who does not say no to other men's money... Louise, who still loves Pierre as her own son, wants only one thing - to help him get by.

Captain Benoît manages to take possession of the plans of a new German airplane. The German counter-espionage assigns one of their agents, beautiful Erna Fiedler, to seduce Benoît and to eliminate him. But the two spies fall in love.

A blackmailer is murdered. Vauzelle, the lover of the beautiful Michelle Korany, is suspected because he was the one who was being blackmailed.

Captain Benoit successfully completes a mission in Berlin, but when he returns to Paris he escapes attacks by German agents.