A woman, believed to be the widow of a certain Edouard, finds herself urged to reveal to her 3 children some very embarrassing news, but not without importance. The many consequences that result will not disturb their respective betrothal.

France, 1893. Joseph Bouvier attempts to shoot his love who refused to marry him and to commit suicide. Upon release from the filthy asylum where he was placed, with bullets still remaining in his head, he wanders the country roads and rapes and murders many teenagers over years. The judge Rousseau captures him, but to serve his ambition seeks to avoid that Bouvier is simply declared insane.

Roland Lasserre is a shy boy, which would be nothing if he weren't also prone to the violent tantrums that have earned him his nickname "Soupe au lait". It's when Francine announces her engagement that he decides to declare his love for her. Francine is not at all keen on the husband her parents are forcing on her - a wealthy record manufacturer - but she gives in under their pressure and asks Roland to give her up. But fate has other plans. A car accident provokes the young man's anger, and with Francine on board, he chases after the hit-and-run driver and ends up in a ditch, luckily undamaged, 50 km from Paris. Torrential rain, lack of transport, welcoming hostelry. All Roland and Francine have to do is confess their guilt, and for the sake of honor, get married... All would be well were it not for René, the neglected fiancé, who provokes "Soupe au lait" and triggers a scandal during the ceremony.

Jean Duclos has extraordinary adventures after taking the train and mistakenly taking the luggage of a young dancer, Lola Wanda. An oil tycoon appoints him as a proxy for his future company, and then he marries his beautiful cousin, Suzy.

The publicist Henri Michelin is looking for a new star for the review of Eden, a music hall led by Bendix.

Philémon De Montfilet came first in his year in the prestigious engineering school "Poly Art Technique" because of an epidemic which brought all the other examination candidates down.

Pierre Leroy has a garage that he manages with the help of a couple of friends, Raymond and Annette. But the bills pile up and Leroy is on the brink of bankruptcy.

During a stopover in Aden, a charming actress is kidnapped by an Arab prince.

Nightclub entertainer Jean Clery discovers too late that the 'baby' he agreed to take care of is a wild, shapely sex kitten.

Harry Louis is a jazz clarinetist, obsessed by his art: he would like to match Sidney Bechet; the famous musician tries to give a piece of advice to his fan who, accidentally, kills him in a fit of anger. With the help of his mistress, Muriel, who has witnessed the scene, Harry does away with Bechet's dead body. But, during this gruesome trip, Muriel is accused of being responsible of a road accident. The insurance company sends a young man, Laurent, to investigate.

The whimsical Jean Latour wins a competition for a month's holiday on the Côte d'Azur. When he arrives at the "Villa Sans Souci", he discovers that the owner and generous donor, M. Mallez, is a doctor, that the property's guests are sick with nerves, and that Mallez has brought him in to entertain his neurasthenic residents.

Raoul Morel, a shy young man without a fortune, is an instructor at a driving school. During a lesson, he is disturbed by the ravishing and capricious Lolita Perez, the wealthy daughter of a South American who, despite her father's opposition, wants to marry a seductive adventurer, Marcel d'Arcy, who covets her fortune. At his instigation, she plans to marry Raoul - a sham marriage - in order to gain possession of his fortune. She divorces him and remarries Marcel. But Lolita falls in love with Raoul, who has been warned of her machinations and refuses the marriage...

In World War II France, American soldier Michael Blake captures, then loses Nazi-collaborator art thief Paul Rona, who leaves behind a gem studded gauntlet (a stolen religious relic). Years later, financial reverses lead Mike to return in search of the object. In Paris, he must dodge mysterious followers and a corpse that's hard to explain; so he and attractive tour guide Christine decamp on a cross-country pursuit that becomes love on the run...then takes yet another turn.

Fates of multiple otherwise disconnected characters intertwine miraculously under the sky of Paris. And it all happens in one day.