Welcome to the Primevères child psychiatry clinic. Marvin, 17, more used to police custody than medical examinations, was interned following a court decision. He does not understand at all what he is doing there and makes him feel good to the other residents and the healthcare team ...

Following a city councils decision, a women's shelter will soon be closed and social workers have only three months to accommodate the residents.

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.

If Paris is the city of lovers, it is also that ... ex! Antoine does not dare to commit, Didier regrets his ex-wife, Father Laurent must celebrate the marriage of his ex, Julie, Serge is harassed by Lise, the ex of his girlfriend of the moment, while Greg consoles With the dog ... of his ex! So many characters whose lives will be telescoped in a joyful disorder and who could fall back in love! But of whom? Whether they obsessed us or loved to hate them, deep down, it is difficult to forget their ex!

Benoît, the new kid at school, is bullied by a gang of arrogant boys. Determined not to be pushed around, Benoît organizes a big party, but only three students turn up. What if this bunch of losers was to be the best gang ever?