Jour de Fête tells the story of an inept and easily-distracted French mailman who frequently interrupts his duties to converse with the local inhabitants, as well as inspect the traveling fair that has come to his small community. Influenced by too much wine and a newsreel account of rapid transportation methods used by the United States postal system, he goes to hilarious lengths to speed the delivery of mail while aboard his bicycle.

A group of policemen look over three murder cases including a cutthroat that prays on young women, a madman that hid his deformed landlord's corpse in the floor, and a wine aficionado who buries his friend alive.

The exploits of Chief Police Inspector Chabrier, first before the invasion of France in May 1940 as he fights against spies preparing the coming the Germans, particularly Emmy de Welder, the alleged manager of the Rouen hospital. Later, Chabrier and his men go underground and resist the occupiers whatever the price to pay. When the Liberation comes Chabrier resumes his activities at the French National Police.

Director of a music hall, the dubious Ribero, to save himself from bankruptcy, only hopes for the victory of his horse. An English lord enlists his crack Master Love in the race. Ribero will try to prevent its departure. He is thwarted in his dark projects by the lord's daughter, captain of a troop of girls, and by a wise and determined sportsman who does not hesitate, for the occasion, to become a jockey. Master Love wins the race, Ribero is confused, a few weddings are celebrated.

In order for important British admiralty papers to pass into the hands of the Germans, the spy Gordon has the ingenious idea of ​​transforming a lamentable drunkard into a Lady, haughty but submissive to his orders. Stella's transformation is complete, the success extraordinary. Why must a French officer touching the heart of the former pochard bring down the fragile edifice? A submarine is about to blow up, Gordon is shot down and a confessed Stella returns to her horrible taverns to drown her sorrows in alcohol for good.

For the Marquis Barbezieux de Saint-Rosay, nobility is important. If anything can comfort her, it's her family tree. In order to erase any doubt he invites in his castle a cousin of his established in Scotland, whom he instructs to bring him his titles of nobility. A first person introduces himself, calling himself his cousin, but it's not him. Then one, then two, then three false cousins ​​appear in turn. Will the real Saint-Rosay of Scotland eventually present itself?

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.

At the Vélodrome d'Hiver, at the height of the sports competitions, the director of the house is found murdered. We also stole the recipe for the show. A swarm of private detectives, second-hand sleuths, embark on the most diverse tracks. Arrests pile up and the chase continues amid the non-stop games. The culprit will however be caught, red-handed, by a young inspector wearing a handsome mask.

A woman in Paris hires a taxi driver to locate her ex-lover, father to her newborn child, who left her without leaving an address.

In 1786, Jocelyn entered the Seminary. He leaves his share of the inheritance to his younger sister Julie. In 1793, on the point of being ordained a priest, the Revolution forced him to take refuge in the Alps. There he meets Laurence, first disguised as a young boy. A great friendship binds them which turns into love when Jocelyn discovers the girl's true identity. Yet faithful to the promise he made to the Superior of his Seminary, Jocelyn will not abandon his faith.