A middle-aged man, an architect by trade, decides to make an end run around getting married. He marries a charming young woman, tenderly in love, who proves incapable of holding him back and, above all, of making him work. But a young American arrives in Paris and reveals that he is the architect's natural son. At first reluctant, the latter and his young wife quickly adapt to the new situation, until the son, a businessman through and through, wants to share with his father his ideas on life, which can be summed up in one sentence: hard work, with no time for pleasure. The father is quick to balk, and the son is forced to unwillingly participate in the fickle architect's nightlife. Eventually, the father is able to settle down, while the son, having acquired a taste for love, has a good time.

A simple civil servant Léon, who has the unusual ability to walk through walls, falls madly in love with a hotel thief by the name of Susan. He poses as Garou-Garou, a dangerous gangster to attempt to woo her affections, but is arrested and sent to jail. While in jail he annoys the guards by walking in and out of his cell, and keeps persuading Susan to cease her criminal way of life. As fundamentally being an honest and law-abiding citizen, he eventually handles back everything he has stolen, is acquitted by the court, and becomes famous and respected. When he learns that Susan is planning to return to England and start a new life, he decides to confess to her his emotions. However, the couple is interrupted by a sudden rush of journalists. Trying to escape in a building, they get cornered on a corridor, and Léon pushes Susan through a nearby wall. But by doing this, he loses his own wall-walking ability, and the film concludes.

Due to financial problems, the boarding-school of Saint-Loup is on the verge of closing its doors. In desperation, Jacquelin, the headmaster, has the idea to invite former students to a fund-raising reunion. Among the alumni, three men whose common point is to have been in love at the time with the headmaster's niece. One is a banker, the second a priest and the last one a globetrotter. All of a sudden, the peace of the assembly is disturbed: Jacquelin's niece has just been murdered.

Minne is a very imaginative young lady. She pretends to have had lovers and can't think of anything better to do other than... to tell Antoine, her husband, the day she marries him. Bad beginning for the couple... As the marriage is not consummated for years, Minne feels frustrated and tries to find elsewhere the carnal knowledge she does not find at home. But Antoine is a kind-hearted man and on the occasion of a trip, a sexual balance is at last found between the two partners.

A journalist who deals with the column "courier du cœur" has the absurd idea of ​​launching an investigation into the death of a pianist whom he claims to have been murdered. To dazzle his wife, a reporter for the newspaper, he disguises the facts in such a way that the police suspect him, then declare him guilty. It takes a number of adventures to get him out of this mess and get him back into his section.