Paris, 1956. Three sisters, three actresses willing to do almost anything to make it big. Their lives, their loves, their dramas. A savory satire of the world of show business and cinema in particular.

Honoré, a valet, has an extremely logical mind and is unable to tell a lie. This comes in very fortunate for the family he works for.

A small-scale cabaret troupe is touring the provinces. One afternoon while canoeing, Monique Darzel, one of the troupe's singers, spots an angler whose resemblance to Fernand Raynaud strikes her. She discusses this with Jean Duroc, the troupe's director, who laments the meagre revenues his show is raking in. He then had the idea of meeting this fisherman to convince him to imitate Fernand Raynaud in his shows. It turns out that the Fernand Raynaud impersonator is in fact Fernand Raynaud himself, who has come for a week's incognito vacation in the provinces. Raynaud is finally persuaded to play the novice comedian, in order to further develop the script for his next film, Les cabotins à travers les âges.

The mysterious death of a well-known criminal sparks an investigation into national security.

Bank accountant Thomas Lieven is forced to work as a triple agent for the British, the French and the Nazis.

Thomas Lieven is a German secret agent trying to leave that profession, to live a peaceful life. Adventure is too strong an appeal, he starts working again, and soon it's difficult to say if he is doing his job, or turned out as double agent for England, France or even communist Russia! To save his skin, he'll do - almost - anything, to anyone...

Marcel Farnoux, an industrialist, lives with eight women: his wife, his two daughters, his mother, his sister-in-law and two maids. One night, he is found dead, shot through the heart. Inspector Duret has a hard time unmasking the killer from among his eight suspicious wives.

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.

Mario, a star ladies' hairdresser, has Nicolas as a friend and Gisèle as his mistress, who is coveted by Nicolas. To boost the salon's finances, Nicolas takes advantage of a billionaire, Madame Alvarez, by selling her a pseudo-rejuvenation serum invented by Mario. Mario suddenly falls in love with a provincial girl, Gabrielle, and pursues her to the South of France, where everyone meets up to finish the film in song.

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.