Commissioner Thomas simultaneously investigates the actions of an oil company, a theft and an assassination, and the kidnapping of a child with look-alikes.

In a girls boarding-school run by Madame Piégeois, young Gisèle meets, at night, the count of Champrès' son.

The Baroness de Courtebise presides over an association of mothers-in-law with grievances against their sons-in-law. Armed with her prerogatives, she forbids the marriage of her daughter-in-law to the mayor's nephew, especially as an inheritance is in doubt. The ladies kidnap, the men kidnap, the election campaign turns sour and the Baroness must capitulate. She takes revenge by falling into the mayor's arms.

A detective uncovers a crime. The suspects are numerous and it will take all the insight of a journalist to discover the culprit.

Adrien Moulinet, a modest encashing agent in the Nortier bank, is also an inventor in his spare time. His latest revolutionary creation is the motorized roller skate. His problem is to be able to market them. Jules Petitpas, a jobless adman, is the right man for that.

The struggles of a small business owner come to light in this film by director André Cayatte. The proprietor of a fabric shop, M. Baudu faces stiff competition when a department store moves in across the street, the first of its kind in 1860s Paris. On top of the stresses associated with the rival retailer, Baudu’s niece and two nephews take up residence with him after recently being orphaned. The niece, Denise Baudu, sees the writing on the wall for her uncle’s business so she takes a job as a shop girl with his competitor and despite her success the decision does not register well with the family.

A chronicle of the life of Bertrand du Guesclin, grand officer of the French army in the 14th century.

Wanting to complete the research of her doctor husband, a former actress returns to the stage and therefore abandons her home. Badly supervised, her little boy runs away. We find him ill in the Alps. He is saved by his father and the parents' union is sealed again.

Gaston wants more than anything to marry the naive Simone. But where he is, there is Sidonie, a local singer romantically pursued by the police commissionaire.

In a small village, an abbot tries to take lightly the jokes of three men, recalcitrant to religion.

Sherlock Coco, famous detective, tries to thwart the machiavellian plans of the trio of shock. Croquignol, Ribouldingue and Filochard must be extra vigilant, but the profit motive is too strong. As a corollary, the famous pink diamond is also of interest to their legendary enemy, Jo Papillon. But always inventive, they will work out multiple scams and tricks to reach their goals.

Honoré, a valet, has an extremely logical mind and is unable to tell a lie. This comes in very fortunate for the family he works for.

A young man leads a happy life in Paris, while making his aunt believe that he is continuing his studies, while she supports him financially.

Lily Ferronais can't stand her husband who, out of weakness, has let himself be led down the wrong road. She flees with her little Jeannette, whom she makes believe in the death of her father. Hired by the restaurateur Jean Garaud, the latter falls in love with her, to the chagrin of his mistress Hélène.

A pilot, hero of the war, finds himself implicated in spite of himself in a traffic. He is wanted by the police, but his former companions and an air hostess will help him prove his innocence.