François Sim considers himself worthless and he may have good reasons for that. Hasn't he lost his job as well as his wife Caroline? Isn't he unable to relate to Lucy, his teenage daughter? Didn't he, when he was eighteen miss out on passion whereas the sexy, gorgeous Luigia opened her arms to him? Hasn't he - he who keeps craving communication - invariably proved a dreadful bore to others...? So, when Sim is unexpectedly offered a job, he takes it, hoping one more time to give a little bit of meaning to his life. Even if his task amounts to driving across France and trying to sell... a "revolutionary biological toothbrush" to reluctant dentists!
After many years of keeping a careful distance, Gaspard, 25 years old, has to renew contact with his family when his father announces he is getting remarried. Accompanied by Laura, an eccentric girl, who agrees to play the role of his girlfriend for the wedding, he finally feels ready to set foot again in his parents' zoo where he is reunited with the monkeys and tigers he grew up with. But between a father who's too much of a womanizer, a brother who's too square and a sister who's far too beautiful, he's not aware that he is preparing to live the last days of his childhood.
Simon has just been discharged from a psychiatric hospital after recurring episodes of self-harm. Still suffering, he rushes to see his heavily pregnant, rabbi wife, Rivka. When one of her young students, a troubled teen named Theodore, runs away on his Bar Mitzvah day, Simon runs after him. Suspicious of each other's motives at first, they soon let their guard down. Together, they teach one another how to trust the world around them, and themselves.