After going to extremes to cover up an accident, a corrupt cop's life spirals out of control when he starts receiving threats from a mysterious witness.

When a gang of robbers provokes chaos in Paris and humiliates the police, the Minister of the Interior wants new blood at the helm of the investigation: Alia is from Marseille, fiery-tempered and unmanageable, Hugo is Parisian, valedictorian and meticulous. In short, they have every reason to hate each other. A forced alliance, for better or for worse, or maybe blossoming into something else?

Nina and Dylan, best friends since childhood, have no secrets from each other. Nina now lives in Paris, while Dylan lives in Biarritz. Dylan always thought they'd end up together, but has never seriously taken a chance on Nina, since she laughs at him every time he mentions a future together. When Nina leaves her boyfriend and decides to go to Biarritz for an impromptu vacation with her two best friends, something finally clicks. Dylan has just started a relationship with her latest date, and Nina realizes that he's the one for her! Full of twists and turns, their love story is going to be much more complicated than expected.

Stéphanie, a police officer working for Internal Affairs, is assigned to a case involving a young man severely wounded during a tense and chaotic demonstration in Paris. While she finds no evidence of illegitimate police violence, the case takes a personal turn when she discovers the victim is from her hometown.