Charles-Edmond, the eldest of the Larmentiel brothers, decides to return to La Rochelle, his hometown to die there. Forty years earlier he had been driven out by his father. Before passing away, the old eccentric announces that he has a hidden son, Émile, a fisherman to whom he wishes to bequeath his property. François, the younger brother, whom Charles-Edmond hates, is eyeing the inheritance to bail out the powerful family business, a veritable fishing trust, and will try to appropriate the affection and property of this inopportune heir. Émile, meanwhile, is too busy arguing with Fernande, a beugland singer, to suspect what awaits him...
A businessman who lives from blackmailing begins to be blackmailed by his own wife who hates him.
A horrific and, on the face of it, incomprehensible murder has just been committed on the unsympathetic person of a loan shark. The victim's body is found lifeless, but the circumstances of his death are far from clear. For want of anything better to go on, the police immediately suspect a penniless gentleman who had the bad idea and misfortune to be present at the time of the crime. The police don't take the time to look for other possible suspects, and are not at the end of their surprises. A dark story seems to lie behind this imbroglio of incoherent facts.
Tongues start to wag after a famous Parisian music hall dancer is rushed to hospital after being found poisoned by arsenic at the Concert Mayol.
The wife of gunsmith Gaston Sarazin cheats on him with his salesman. The husband, informed, wants revenge. The culprits try to divert suspicion on the dashing Stanislas. The husband forces the straw lover to live with him. Stanislas then brings the spouses together and makes the business of the gunsmith prosper.
Henri Chatelard is well into his forties, owns a restaurant and a cinema in the city, and appreciates women. When he meets Marie, an 18-ish strong-head who just lost her father in a small fishing village, it is not clear who is the hunter and who is the prey.
Gaston Bernod is a Parisian bus driver. Honest, upright and hard-working, he is held in high esteem by his superiors. Gaston has always pampered "his" bus, going as far as to equip it with a fuel-saving device of his invention. Very close to his vehicle, he may have somewhat neglected his wife Paulette, who lets herself got round by the smooth words of Pierrot. The gigolo has indeed managed to persuade her to follow him to the Mont Saint-Michel, "a wonderful nest for their burgeoning love" as he says. The trouble is that Gaston, while driving his dear 84, catches sight of the car, and suddenly aware of his misfortune, sees red. He immediately sets off in pursuit of the culprits, involving his load of helpless passengers in the chase.
Naive and good-hearted Léon Ménard arrives in Paris, determined to find work in the capital. In a café, he meets Bob, a seedy guy, who helps him to get a job. On cloud nine, the ingenuous young man, does is unaware of how Bob manipulates him. Having become the night concierge of a hotel, the thankful Léon lets Bob and his accomplices get into the pace. Jewels are stolen as a result.When he is accused, Leon refuses to incriminate his "friend". Fortunately, Charlotte, Léon's fiancé, manages to find evidence of Bob's guilt and thanks to a premium paid by the diamond dealer the two lovebirds can buy a grocer's shop and tie the knot.
Loiseau the pharmacist mistakenly mixes potassium cyanide into a batch of cough syrup and sells five bottles. With horror he discovers his mistake and sets out to find the buyers. He finds only four. The fifth, not a regular customer, comes back to the pharmacy...
Emile is a French film producer at the beginning of the century. One of his friends leaves his daughter Lucette in his house, when he is starting a tour through France. Emile falls in love with her. Problems starts when his younger friend Jacques come back from military service and after complaining his misfortune with women, follows Emile's advice in starting affairs with women and he meets Lucette.
A traveller is stuck in an unknown town because his connecting train will only arrive in six hours. He decides to kill time by taking a stroll. He is not prepared to get confused with somebody else. In fact the citizens are eagerly awaiting the visit of a famous man and the clueless traveller is his doppelgänger. Soon he experiences what that means.