Marceau Léonetti, a competent and energetic officer stops by chance the son of an influential lawyer driving under the influence of alcohol. A few months later, the lawyer falsely accuses Léonetti as being violent and incompetent. As a result Marceau is transferred to a small police station, where he meets young and beautiful Jeanne. Soon they are faced with a tough investigation.

24 hours in the life of a humble general practitioner. A very busy life to say the least... Like every other day, Dr. Forget works from morning till dusk (and even later). He sees patients in his consulting room or visits them either on house calls or at the hospital. But is today just another day? Not quite since on this very day, Junior, Dr. Forget's son, will know if he has passed or not his exam at the faculty of medicine.

The Marquis Rodolphe de Sombrueil accidentally runs over a working man with his carriage and helps his widow -- unjustly accused of robbery -- to find her missing daughter.

A man remarried his wife's sister whom he believes died in a fire. The alleged deceased reappears and sows trouble and discord in the new household.

A banker who lost everything in the stock market is on the verge of committing suicide when the Devil appears to him and offers to give him a fortune every day on one condition: he must do evil things with the money! Will the banker keep his end of the deal...

Gaston, nicknamed Pilou, has left his native village and Yvette, the girl of his heart, to go to Paris where he has found work as a painter. He is a naive good-natured man who, like most of his fellow-workers, favors a little song or two while he works. For the time being he is busy repainting the exterior of a block of flats and, when he does not sing to pass the time, he looks through the windows, observing the tenants in their daily lives. As time goes by, he goes as far as intervening and changing the course of their lives. In the end, despite having found a lookalike of his fiancée, he returns to her.

Lucrèce, a famous actress, is bothered first, then flattered by the passionate testimonies of love given to her by François, a 12th grade student infatuated with her. Taking pity on the boy, Lucrèce decides to heal him of his madness and with this in mind she invites him for a working holiday on her farm. Instead, she falls in love with the cherub. At a time, her young lover grows so jealous of her that he attempts suicide. The mature actress then understands that their love story is going nowhere. She will remain alone while François will forget her.

A young composer is forced to work as a bar pianist. One night he gets hit by a car and is brought to a hospital. Severely injured he is injected with morphine. He becomes addicted.

Two unlikely companions must smuggle four suitcases filled with contraband pork across Nazi-occupied Paris.

This film originated as a play in Paris. The story focuses on the one-day adventures of Bertrand Barnier played with a genius of French cinema, Louis de Funes. In the same morning he learns that his daughter is pregnant, an employee stole a large amount of money from his company, his maid is about to resign in order to marry a wealthy neighbor and his body builder is interested in marrying his daughter. The seemingly complicated story-line is full of comedy or errors and some of the most hilarious mime scenes of the French cinema.