Huckleberry Finn is a 15-year-old boy who has had a difficult relationship with his often violent father for a long time. When Dad tried to kidnap him, Huck decides to run away from home, and heads out of town on a raft. Huck is soon joined by Jim, a runaway slave who is no more eager to see his master than Huck is to see his father. As the two friends make their way down the Mississippi, they're faced with a variety of challenges and adventures.

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 former colonial official lives far from Paris with a dry cousin who pays attention to his heritage. He never took care of his son, married to a singer, even less of his granddaughter Colette. The chances of life mean that the grandfather is obliged to take in Colette for a while. This works wonders, unmasks the cousin conniving with cronies, unravels the intrigues, thwarts the machinations and reconciles all the members of the family.

Tania, a young girl from Central Europe, leaves her home because of her abusive father. Trained, in spite of herself, in the nets of the secret services, she becomes a renowned dancer who travels the major capitals, in search of military information. In 1917, in Paris, she was arrested and sentenced to death. She will be executed despite the fervent defense of her lawyer who has fallen in love with her.