An upper middle-class French family celebrates a birthday in a restaurant. In one evening and during one meal, family history, tensions, collective and separate grudges, delights, and memories both clash and coalesce.

Odile is a business executive looking for a new, bigger apartment. Her younger sister Camille has just completed her doctoral thesis in history and is a Paris tour guide. Simon is a regular on Camille's tours because he's attracted to her. Camille has fallen for Marc, and they begin an affair. Nicolas is also looking for an apartment, since he hopes to eventually have his family join him in Paris.

Unpolished and ultra-pragmatic industrialist Jean-Jacques Castella reluctantly attends Racine's tragedy "Berenice" in order to see his niece play a bit part. He is taken with the play's strangely familiar-looking leading lady Clara Devaux. During the course of the show, Castella soon remembers that he once hired and then promptly fired the actress as an English language tutor. He immediately goes out and signs up for language lessons. Thinking that he is nothing but an ill-tempered philistine with bad taste, Clara rejects him until Castella charms her off her feet.

Talented 20-year-old Lolita dreams of a singing career. But her self-esteem is low due to her weight problem and her narcissistic father, Étienne, a literary star with scant interest in his daughter's life. Lolita finds little comfort in the attentions of her vocal coach, suspecting the woman is using her to meet her influential father. Étienne's second wife proves to be Lolita's only trustworthy ally in her private battle to find a sense of worth.

Agathe Villanova is a self-centered, workaholic feminist politician who, upon reluctantly returning to her home in the south of France to sort out her mother's affairs, runs for a local election. Upon her arrival, Agathe grudgingly agrees to take part in a documentary being made by the blundering duo of Karim, an aspiring filmmaker, and self-professed "reporter" Michel, on the subject of "successful women." As Agathe's life hilariously unravels, the camera is there to capture it all.

Max is a battle-weary veteran of the wedding-planning racket. His latest — and last — gig is a hell of a fête, involving stuffy period costumes for the caterers, a vain, hyper- sensitive singer who thinks he's a Gallic James Brown, and a morose, micromanaging groom determined to make Max's night as miserable as possible. But what makes the affair too bitter to endure is that Max's colleague and ostensible girlfriend, Joisette, seems to have written him off, coolly going about her professional duties while openly flirting with a much younger server. It's going to be a very long night… especially once the groom's aerial serenade gets underway.

Laura is still waiting for Prince Charming at the age of 24. So when Sandro appears at a party, exactly like her Prince would in her dreams, she thinks she's found the right one. But then again, when she meets Maxime, Laura starts to wonder if some Princes could be more charming than others? Of course Sandro has problems of his own : his father, Pierre, just bumped into Madam Irma at his father's funeral and this reminded him of the date of his own death which Madame Irma had predicted ages ago. Now Pierre is unable to make any plans, not with his new partner Eleonore, nor with Sandro. And Maxime has his own problems, and so does Eleonore, Marianne, Jacqueline and many others. But don't worry, in the end, they'll all live happily ever after.

In 1942 in occupied France, a Jewish refugee marries a soldier to escape deportation to Germany. Meanwhile a wealthy art student loses her first husband to a stray Resistance bullet; at the Liberation she meets an actor, gets pregnant, and marries him. Lena and Madeleine meet at their children's school in Lyon in 1952 and the intensity of their relationship strains both their marriages to the breaking point.