Catherine refuses to believe that her business partner, the unlikeable François, has a best friend, so she challenges him to set up an introduction. Scrambling to find someone willing to pose as his best pal, François enlists the services of a charming taxi driver to play the part.
Martial (Daniel Auteuil) is discharged from a mental insitution where he spent a few years due to a serious nervous breakdown. During his hospitalization, he ceases to speak with everyone, including his wife Régine (Thérèse Liotard), whom he had encouraged to find a new partner soon after entering the clinic. Upon his return he finds his mother (Danielle Darrieux), a busy business woman who owns a supermarket chain. She's convinced that his son, whom by now hardly talks to anyone after his experience, will be able to find himself again if tasked with some responbibilities. Soon enough, he's sent to Limoges on a business trip to check on one of their stores in the hope to reinvigorate its failing business. Once he arrives, Martial is faced with responsibilities he had never imagined, including dealing with the store's personnel.
40-year-old Bertrand has been suffering from depression for the last two years and is barely able to keep his head above water. Despite the medication he gulps down all day, every day, and his wife's encouragement, he is unable to find any meaning in his life. Curiously, he will end up finding this sense of purpose at the swimming pool, by joining an all-male synchronised swimming team.
Maxime and Paulo are two young men in their very early twenties. Maxime is spending his summer holidays with his parents in a camping resort, which he hates, and Paulo is working in the nearest cafeteria. They hope to win a cruise to Bora-Bora by collecting capsules from pop-soda bottles. They are missing only one capsule, which is unfortunately found by Penelope, who works in the local supermarket. Unfortunately, because Penelope is not very attractive. The two boys make Penelope believe that Paulo is going to go on the cruise with her, but Maxime decides to ride along with them, in Penelope's old car, to Marseille, where the ship is leaving from. Actually the two boys plan to steal Penelope's capsule, get rid of her, and go on the cruise together. But, on their way to Marseille, they are going to meet a couple of very strange elderly people, Hermine and Gaspard.
Sauveur (Savior) needs someone to save him, and so he begins to look for his father, a fast- talking ladies' man. The son becomes attached to his misanthropic father, and soon a crippled woman photographer and a gigolo with a killer smile also enter the scene, and the situation becomes more and more impossible.
Alain, a successful Parisian publisher struggling to adapt to the digital revolution, has major doubts about the new manuscript of Léonard, one of his long-time authors - another work of auto-fiction recycling his love affair with a minor celebrity. Selena, Alain’s wife, a famous stage actress, is of the opposite opinion.
Eight women gather to celebrate Christmas in a snowbound cottage, only to find the family patriarch dead with a knife in his back. Trapped in the house, every woman becomes a suspect, each having her own motive and secret.