Trois... six... neuf

François Marsault, a war veteran, makes the most of his retirement alongside his wife Annie. Authoritarian and ruthless, François rules his family with an iron fist — but when he discovers that his esteemed wife cheated on him 40 years ago, he files for divorce and confronts her former lover, who lives in the French Riviera.

Stressed and overworked, famous French movie star Michel Blanc is beginning to wear down, physically and mentally, from the pressure and demands of fame. Already in a fragile state of mind, strange events start to transpire all around him, and he gradually loses his grip. Taking the advice of a psychiatrist, Blanc retreats to the countryside with his friend Carole Bouquet, but Blanc still has not managed to escape all of his problems.

Meet Adrien! He's 35. He's stuck in a mid-life crisis. He's neurotic and hypochondriac. Tonight he's stuck in an endless family dinner and his girlfriend is not answering his texts. On top of that, his dumb brother-in-law asks him to prepare a speech for his wedding. Could it get even worse?

Franck and Karine are offered a job on a cruise ship they can’t refuse. The only problem: their daughter Camille has to study for her finals but has other ideas of fun in mind instead… No problem! To straighten his daughter out and set her to work, Franck calls on his father André, a retired captain from the national police, hopelessly uptight and rigid. With military discipline, Camille’s finals will be a success! But this is the moment when the second grandfather Teddy, an eccentric and wild former nightclub manager and the total opposite of the strict André, chooses to return after many years abroad... Living together promises to be complicated…

Long married 50-somethings Brigitte and Xavier are prize cattle breeders in regional France. Life is good, but the departure of their children from home has thrown Brigitte’s world into flux, as she finds herself locked into routine. She keeps hoping for something else, something more. A party held by students on the adjoining property accelerates this latent crisis and Brigitte impulsively sets off for Paris under the guise of a doctor’s appointment. The city immediately invigorates her, and when she meets a charming Danish gentleman, she impulsively allows herself to be flattered by his attentions…

Ariane is convinced that her boyfriend, Jean-Jacques, is having fantasies about another woman, Élisabeth. In an attempt to save their relationship, Ariane encourages Jean-Jacques to pursue Élisabeth, believing that this is the best way to free him from his own desires. Jean-Jacques presents himself at Élisabeth's house, not realising that she is the daughter of the French President.

39 years old Jacques Monot is tired from the same vacation he and his family have every year so he decides to buy a boat.

Vincent, a wealthy real estate agent, is invited to dinner by his sister Elizabeth and her husband Peter, both professors in Paris. Claude, a childhood friend and trombonist in a symphony orchestra, is also present. Vincent brings news from the prenatal examination of his and his wife Anna's unborn son. The name chosen by the soon-to-be parents strongly offends the others for many reasons. The dispute between the guests quickly escalates and before long the resurgence of old grudges and hidden secrets is unavoidable...

Tamara has been separated from Diego for two years. She finally leaves home to live the student adventure in Paris with his girlfriend Sam. In a galley apartment, they accept a cohabit with Wagner. Problem: Diego is part of the lot, and he is no more single.

Henri is a middle-aged writer with fading inspiration who has published nothing worthy of note in years. Feeling increasingly misunderstood by his wife and four grown up deadbeat kids, he dreams of running away to start over again. Yet when he discovers an unattractive, bad-mannered dog in his garden, he decides to adopt him and both start developing an unexpected friendship that inevitably upsets Henri’s family and neighbors.

Michel works there manically solving people's problems over the phone. He is about to tie the knot with his girl friend Isabelle, an airline hostess. She flies all over the world, he hates to leave the office. A series of madcap mishaps involving theft or injury (as you would expect in his line of work) ensues after Michel promises Isabelle nothing will delay their marriage and she promises in turn that she's done flying. Once this unlikely promise is made, it becomes premise and both are forced into escalating white lies to maintain the appearance of keeping their word. Their predicament mounts as Isabelle is forced to do a few more flights, while Michel is compelled to travel to New York, Tunisia, and finally Hong Kong, where they are finally reunited in the throes of a contrived and hilarious drug deal involving a 747, water taxi chases, and martial arts.

Newly engaged, Thomas meets his future father-in-law Gilbert, who has been married for 30 years to Suzanne. Disillusioned Gilbert is convinced that his marriage has meant he's missed out on life. He persuades Thomas not to marry his daughter Lola and encourages him to drop everything else in his life as well. The two men then throw themselves into a new brats' life full of adventure, convinced that freedom is elsewhere. But at what cost do we rediscover our adolescent dreams?