Léon, a humble civil servant, has the unusual ability to walk through walls, however thick they are. One day, he falls madly in love with a charming hotel thief by the name of Suzan.

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.

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.

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.