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.

A writer gets wrapped up in espionage.

To get a job and marry the nice Yvette, a quilt teacher, Julien goes to Paris. On the station platform, he swears loyalty to her, but as soon as he arrives in the capital, the seductive provincial wreaks havoc. His insatiable landlady, all the saleswomen of the shop where he is hired as an accountant, at the slightest pretext, solicit him, undress and abuse him. Finally arrives the boss, Joëlle... who is the exact double of Yvette, without her pigtails! Julien then loses his head and falls in love with the double.

To get a job and marry the nice Yvette, a quilt teacher, Julien goes to Paris. On the station platform, he swears loyalty to her, but as soon as he arrives in the capital, the seductive provincial wreaks havoc. His insatiable landlady, all the saleswomen of the shop where he is hired as an accountant, at the slightest pretext, solicit him, undress and abuse him. Finally arrives the boss, Joëlle... who is the exact double of Yvette, without her pigtails! Julien then loses his head and falls in love with the double.

Traumatized by the War of Algeria and by the accidental death of his wife and his son, Manu left the right road. His last caper was the attack of the Antwerp-Tangiers Express, carrying a precious cargo of industrial diamonds. But the whole affair was bungled and all of his accomplices got shot. The only survivor of this disaster, Manu now finds refuge in the mountain house of Lucia, the widow of a smuggler who lives alone there with her little boy.

The spoiled daughter of the French Ambassador tricks one of his aides into marrying her.