An ambitious and perverse adventurer sows dissension and ruin in a wealthy family of industrialists.

A young man is hired by an industrialist, while a secret hangs over his birth. His boss's wife turns out to be his mother, who hides the truth from him.

A detective uncovers a crime. The suspects are numerous and it will take all the insight of a journalist to discover the culprit.

In 1914, in the first months of World War I, Louise Jarraud loses her husband, killed on the front. Shortly after, she gives birth to a baby, who soon dies. Devastated by this double misfortune, Louise decides to dedicate her life to caring for the children of others. She becomes a nurse with several employers, giving her affection to little boys or girls. A widower and another man propose to her but she refuses twice determined as she is to live only for the children in her charge.

A father allows himself to be accused of the murder of a blackmailer to save his son who is the real murderer. But he is forced to confess, and commits suicide in his cell.

In 1906, François left the Basque country with his father, who had decided to settle in Argentina following an incident between him and Esteban. Having become a powerful industrialist, he returned to France in 1940 on the occasion of the signing of a contract. He learns that the Haut-le-Vent estate, occupied by his aunt Anna, is his. Greeted with mistrust by the villagers, he manages to make himself sympathetic and decides to stay on the estate with Gisèle, Esteban's daughter.

Pierre and Jacques, one of them being disguised as a woman, work for a wacky scientist to find a treasure hidden in his property by Pierre's uncle.

A song editor from Marseille meets the daughter of a showman whom a competitor wants to ruin to get the hand of the young woman.