Roger, editor of a women's magazine, meets Roberte, his friend Jean's former mistress, at a major couturier's during a collection presentation. Roberte, who now lives in Florence with her niece Maria, asks Roger to arrange a student exchange so that Maria can come to Paris to perfect her French. Roger approaches Jean's son Philippe, a student at the Beaux-Arts, who agrees to go to Florence. Maria and Philippe meet on the platform at Pisé station. They miss their respective trains and take a walk together. A flirtation begins, then each goes back to the other. Jean finds Maria charming and, like an unrepentant Don Juan, decides to win her over, but thanks to his old maid, his intrigues come to nothing and Maria can marry Philippe.

Antoine Fournier, a language teacher at a secondary school in Lille, was disgraced by four young men he had caught stealing money from a charity collection. Dismissed from the teaching profession, Fournier found a job as a porter in a Monte Carlo palace through his wartime friend Ansaldi. A few years later, when he became the first concierge, the "man with the golden keys", chance brought him into the presence of the young men, married but as Machiavellian as ever. He won't take revenge on them, but their baser instincts will.

Young and handsome Armand Duval falls in love with Marguerite Gautier, a 'demi-mondaine'. He manages to persuade her to give up her life as a courtesan and they both settle down in the country. Tthe beginning of their idyll is like a dream but a short-lived one as their relationship is considered scandalous by Armand's family. During a secret visit to Marguerite, Armand's father convinces her to leave his son, which she does broken-heartedly but out of love for Armand. Her end will be doubly tragic; not only does she suffer from terminal tuberculosis but she is abandoned by everyone, including by Armand, who believes she has betrayed her. At long last, learning the truth, Armand rushes to her bedside and Marguerite has the joy to breathe her last in his arms.

Bertal, a despotic and hated theater director, is assassinated before a performance of Macbeth in which he was to play with Aurélia Nobli, his companion and Ludovic Arn, her lover. The police arrive on the scene and the investigation begins. Suspicion first falls on Sigurd, an old actor who had threatened Bertal. But parallels appear between the characters in the play and the actors who play them.

In Paris in 1314, the knight Jean Buridan is in love with Mirtille but the young woman is already coveted by the king's brother.

The inhabitants of Marboue-Chambourcy want a swimming pool, and the difficulties in realizing this expensive dream divide the village into two clans: on one side the women, on the other the men. Piedalu, whom this conflict desolates, discovers by chance, as part of a found bicycle, a fortune in gold coins.

Mario, a bumptious sheep-shearer, discovers he has a inimtable touch that makes women, as well as sheep, swoon at his professional caress. He is soon the most sought-after hairdresser in France and is awarded the Legion of Honor...