Si jeunesse savait...

During the students ' rebellion against Nicholas the Second in Russia, Viana tries to kill the governor but it's her lover who is arrested and sent to a sinister fortress : hence the title. To help the prisoner,Vania marries the officer who commands the place. There the convicts have really a bad time, but Vania manages to communicate with her dear captive. But beware of informers.

Suzanne Beulemans's fiancé, Séraphin Meulenmeester, once tells her that he has... a mistress and a... son! The bad news falls rather well though given that Suzanne has developed a fondness for Albert Delpierre, a young Frenchman who has come to Brussels to study the brewing methods of her father. She decides to break up amicably but Séraphin does not dare admit it to his father, who becomes angry with the Beulemanses. Suzanne's uncle, a vicar, tries to settle the whole thing but the coronation of King Albert I gives rise to renewed resentment. Suzanne finally finds the way to solve the problem: she takes Meulenmeester apart, reminds him of his own misconduct when he was a young man, asks him to forgive Séraphin while her own father accepts Albert as his son-in-law.

Nicole, a spirited lawyer, must defend, for her debut in the courtroom, the accused Panoyau. It is a failure, the death sentence. Furious, Nicole proclaims to Claude, her fiance, that the marriage is canceled as long as Panoyau is threatened. Claude manages to steal the guillotine and the couple go on a trip and discover the real assassin.

In 1525, on the evening of the Battle of Pavia, François 1er was taken prisoner by the armies of Charles-Quint, with the Constable de Bourbon on their side. His mother, regent of the kingdom, commissioned the king's loyal equerry, Antoine de Montpezat, to raise a ransom of two million ecus and send it to Madrid. Despite the treachery of Vandoeuvre, governor of Languedoc and supporter of the connétable de Bourbon, who has his eye on the French throne, Montpezat accomplishes his mission and is reunited with his fiancée, who had almost married the traitor Vandoeuvre.

An American star, visiting Paris, falls asleep in the Louvre while a guide comments on Watteau's "Voyage à Cythère". She dreams that the painting's characters, beautiful ladies, escape, scattering across Paris after a tour of the fashion houses.

A poacher nicknamed "Le Bouif" is accused of having murdered his son-in-law, trainer of a horse stable in Maisons-Laffitte.

The life of a great city (Paris) from dawn until dusk, including the beautiful and the ragged, the rich and the poor.

A provincial, Julie Moret, is hired as a servant in a Parisian bourgeois residence. She is courted by one of the Bouquinquant brothers, Léon, who does not take long to ask her to marry him. Alas, Léon turns out to be violent, alcoholic and lazy. Faced with her misfortune, Julie gets closer to her brother-in-law Pierre, the opposite of Léon, serious and hardworking, and they become lovers. The drama will rush when Julie becomes pregnant with Pierre.

After finding and adopting a child, a man gets a job at an all-girls school which doesn't allow families. Once the girls find the baby, they become his forty little mothers. At the same time, the child's true mother searches for him.

Monsieur Jourdain is a dangerous madman : he wants to share his fortune! His relatives do what any sensible fellow on earth would do: they have him committed to a mental hospital. But Jourdain manages to escape and decides to make everybody happy except... his heirs!

This is 1929: the little red riding hood is still with us and her life is more complicated than ever. She still has to go through the forest and she once again comes up against a wolf. This time around the big bad wolf has become a lecherous tramp who keeps stalking the girl trying to wolf her down ... in his own way of course.

About the conflict between social classes through the life of the unhappy Catherine Ferrand, an orphan girl, who is a victim of the jealousy of women and the greed of men.

An intelligent young worker, enterprising but boastful, repeats to all the winds that, if he were the boss, we would see what we would see. One of the main shareholders of the factory takes him at his word for twenty-four hours.

The tale of a rich, flaky poet and his servant who both join the army and wind up in the same barracks.

Denise Moret joins her husband, Pierre, in Mongolia where he works as a civil engineer. One night she loose a lot of money on the roulette and therefore is forced to borrow money from Prince Lee-Lang. The Prince immediately begins to flirt and make advances towards Denise. Advances she rejects.