As a favor to his grandmother, singer Rudy Hirigoyen agrees to sing incognito, under the name Romano, in the nightclub his cousin Gustave has just opened in a small seaside resort. The staff and musicians are students camping out in the pine forest near "L'Auberge Fleurie". Grandma has rented the apartment above the club to summer guests: Commandant Portafaux and his wife.

Lola, the wife of arms dealer Pedro Wassewich, is attracted to Ludovic, a young painter who turns out to be the emissary of a notorious gangster. He claims to have been sent by the latter to pick up a shipment. In fact, it's the police who, behind the scenes, orchestrate the operation to catch Wassewich red-handed.

Penelope Benson, known as Penny, is both romantic and determined. Put in a select boarding school by her mother, she takes advantage of a trip to Paris to get away from it all and live her own life. That's how she meets Antoine du Merlet, whom she takes for a young hoodlum when in fact he's a police superintendent. She spends the night at his place, which leads to a number of setbacks for poor Antoine, who is stigmatized by the headmistress, abandoned by his mistress and has to face a strip-tease session starring the unconscious Penny... But Penny's a spicy one and Antoine's a nice guy, so... !

In Marseille, crime squad captain Dominique fights against racketeers and tries to put a young man back on the right track.

1914, a small village of the Marne. Charming and woken up, Madeleine, said the Madelon, who works in the coffee(café) of his father, Tourlourou, account of numerous pretenders. To the rich Antoine Pichot, she prefers corporal Beauguitte. When the war bursts, she(it) searches for the latter.

Bobby earns his living in Montmartre by duping naïve provincials, along with his pal Julien, as well as crooks and drug dealers, replaced by bicarbonate. His friend Monique, who dances at Le Paradou, is frightened by such a life. A crime of which he is not guilty occurs while he is robbing drug dealer Mureau. Bobby flees, but prefers to let himself be imprisoned. A serious accident is avoided. The brave Inspector Doirel is determined to set the boy straight. Monique will do her bit too.

Léo Fardier is a police inspector who goes to prison undercover as a convict. He shares a cell with Mariani, a Corsican mafioso, whose trust he earns. The day Léo leaves prison, the criminal entrusts him with a letter to deliver to his estranged wife. He finds her, and she falls under his spell. The problem is that he, too, has fallen in love with her.

Smalltown confectioner Lespinasse, hopeful of being reelected as chief councillor, is opposed by Darcepoil, the local druggist. Darcepoil arranges for the incumbent's defeat by having Pantaflon, a nightclub singer, lure him to the nudist camp on the Isle of Levant, where Lespinasse is photographed surrounded by half-naked women. At home, he is berated by his wife and thrown out of office; but he returns to Levant with the penitent Pantaflon and is welcomed by the nudists and voted camp president. His forgiving wife follows him and herself becomes a nudist.

While Henri Laurent speeds along on the racing circuits, his pretty wife Françoise goes from luxury boutique to luxury boutique with her best friend Denise. One day, Denise lets her know that Henri has a lover. Outraged, Françoise moves out of marital home and rents a maids' room in Rue de l'Estrapade. Henri tries to get his wife back but Françoise does not listen. She even looks for a job in a prêt-à-porter shop and lets herself be courted by Robert, her neighbor across the landing...

Robert Vernier is assigned by the Secret Service to unmask a band of gangsters determined to get their hands on the plans for a new plane. They manage to steal part of it and kidnap Robert's fiancée, named Monique. Robert will manage to dismantle the gang and will be surprised to find that at the head there is a policeman...

In order to escape the police, a man takes the place of his missing sister, who was clairvoyant.

Jean-Louis forgets to use the pedestrian crossing;Who could have believed then where it would lead the unfortunate guy to?

Gilberte is a sixteen year old girl raised by her aunt and grandmother to be a demimondaine. But she's not ready for that yet, and spends her days in lessons and in teasing Mamita's old friend, the rich playboy Gaston LaChaille, and following his affairs from afar. But when Gaston throws off his latest mistress, it looks as if Gigi just might be ready to begin her destined career.

Exiled from the court of Spain, Don Salluste, the chief of police, wants to take revenge on the Queen. One day he meets Ruy Blas, a young student who happens to be a lookalike of Don Cesar, his nephew. Salluste disguises Ruy Blas and presents him as Don Cesar. It doesn't take long before Ruy Blas, intelligent, virtuous and generous as he is becomes popular and the Queen, who has fallen in love with him, appoints him Prime Minister. All seems for the best in the best of worlds but Salluste has not forgotten his revenge, far from that ...