In late 19th century France, the Countess Louise, wife of a wealthy general, sells the earrings her husband gave her on their wedding day to pay off her secret debts, then claims to have lost them. Her husband quickly learns of the deceit, which is the beginning of many tragic misunderstandings, all involving the earrings, the general, the countess, and her new lover, the Italian Baron Donati.
At the end of the 19th century, during a ball in Joinville, on the outskirts of Paris, Georges, a former delinquent working as a carpenter, meets Marie, a young woman connected to a criminal gang.
Henri and Jeannette Milliard, a newly married couple from Normandy arrive in Paris where they intend to spend their honeymoon. Unforfunately a wicket gate in the metro separates the couple. In panic, Henri looks for his wife across the capital. He ends up finding her at the hotel they were to put up. But it looks as if Jeannette has gone through some distressing adventure.
A couple of dancers performs in a night club. The man is jealous of Gina, his partner,and keeps making scenes to her, going as far as bullying her on the stage during their act. A man gets killed. The dancer is suspected for being jealous of all the other men. Another potential culprit could the father of Gina since he overprotected his daughter. The real culprit will be unmasked after the police detective finds the murder has something to with the Occupation period.
Eugène, who works for Radio-Europe, is a bit dim-witted. He lives in a block of flats whose caretaker is Madame Motte, and the lady is in love with the young man. Just for laughs, Eugène's friends circulate on the air the rumor that Eugène has inherited millions of francs. It does not take long before a swarm of 'friends' start mixing with him. After a while, considering that the joke has lasted long enough, the jokers reveal the truth. Eugène immediately loses all his 'friends' but not he girl he loves. Even better, Eugène actually inherits a big sum of money. He who laughs last laughs best!
André Courvalin, a merry bachelor, considers marrying, but not his exuberant mistress Aurélie. He would much rather wed sweet Suzanne. Trouble is that Suzanne is already engaged to Yves, one of his friends. But every problem has its solution. Accordingly, André finalizes a cynical stratagem. He sends Yves to negotiate his own breakup with Aurélie while he warns Aurélie's husband about Yves' presence by her side.All goes according to plan : Yves is mistakenly taken for Aurélie's husband.
Marguerite secretly loves a novelist whose face no one knows. The jealous husband sets up a scheme by asking an actor friend to play the novelist and behave in an execrable way in order to disgust his wife. But things never turn out the way you think they will.
In the train that takes her back home, Catheine Beryl meets concert pianist André Fuger, a childhood friend of her husband's. The musician is both good-looking and seductive and Catherine soon falls for his charms. The two young people spend the evening and the following night together. The next day, a lost powder compact gives the affair away. At a loss, Catherine runs away from her husband but she has an accident. When she regains consciousness in her hospital bed, Catherine finds Georges, her husband, by her side, pretending nothing has happened.
1948. Madeleine is the headmistress of a kindergarten in Ménilmontant. Dr Libois, the school doctor, is very close to her heart. When Rose, a new helper comes to the school, Libois is impressed at once by her understanding of the little ones and her dedication to them. Little by little, Libois grows fond of Rose while becoming estranged from Madeleine. He eventually marries Rose.
Emile is a French film producer at the beginning of the century. One of his friends leaves his daughter Lucette in his house, when he is starting a tour through France. Emile falls in love with her. Problems starts when his younger friend Jacques come back from military service and after complaining his misfortune with women, follows Emile's advice in starting affairs with women and he meets Lucette.