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.

A visa problem forces Adrien back to Paris after 15 years in Senegal with his wife Aminata. Her cousin Sékou, now distanced from his Senegalese origins, takes in Adrien. As Adrien awaits his return, Sékou shows him France, sparking surprises.

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.

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.

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?

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...

Serge Pilardosse has just turned 60. He has worked since the age of 16, never unemployed, never sick. But the hour of retirement has come, and it is disillusionment: he is missing points, some employers having forgotten to declare it! Pushed by Catherine, his wife, he gets on his old motorcycle from the 70s, a "Mammut" which earned him his nickname, and sets off in search of his pay slips. During his journey, he rediscovers his past and his quest for administrative documents soon becomes incidental...

At 55, Anne is finally enjoying her freedom after her children leave home. But everything changes when her 23-year-old daughter, Louise, moves back in with her after a professional and romantic failure. And to make matters worse, her son, Théo, announces that she's going to be a grandmother! Anne realizes that life never goes as planned and that, at any age, we are still learning to grow up.

Baptiste, a talented imitator, is unable to make a living from his art. One day, he is approached by Pierre Chozène, a famous but discreet novelist, constantly disturbed by incessant calls from his publisher, his daughter, his ex-wife... Pierre, who needs peace and quiet to write his most ambitious text, then suggests that Baptiste become his 'answering machine' by pretending to be him on the phone... Little by little, Baptiste doesn't just imitate the writer: he develops his character!