Le Bouif is a popular figure on the Parisian racetrack. He has the patter, the aplomb, the bonhomie, which allows him to pass on indestructible pipes to the racegoers. The amazement is general when he is accused of murdering the person of his son-in-law and then suspected of having suppressed the owner of a stable. Faced with the stubbornness of the examining magistrate, but helped by sympathetic young people, the Bouif proves his innocence and, back on the lawn, measures his popularity.

The life of disorderly soldiers in the barracks dealing with daily routines.

Chouchou leads a happy life between his comrades and his fiancée. But his father wants him to marry a rich American in love with him. Chouchou refuses and looks for work in order to be independent and to marry the one he loves.

During the First World War, before joining a squadron at the front in 1918, Herbillon (Jean-Pierre Aumont) has a liaison with Helene (Annabella), a married woman. The young man discovers that his mistress is none other than the wife of Maury (Charles Vanel), an aviator friend.

The young and patriotic student Demachy joins the French army in 1914 to defend his country. But he and his comrades soon experience the terrifying, endless trench war in Champagne, where more and more wooden crosses have to be erected for this cannon fodder.

The story is about a drug ring and the finally successful efforts of the Paris police to break it up. A young detective goes into a den in Paris' Chinatown, following a clue, and that is the last seen of him until his body is found floating in the Seine several days later. The only clue is a woman's glove. The dead man's friends on the force vow to avenge him, and receive information leading them to suspect one Sandra, a beautiful foreigner, played by the stunning Marcelle Chantal.