Jean Monier is a disillusioned lawyer, appointed to defend Nicolas Milik, a man accused of murdering his wife. While everything points to his guilt, Monier takes up the case, convinced of his innocence.

The story revolves around a clash between wealthy Parisian holiday home owners and their housekeepers. Hailing from a modest background, newly qualified in law, and madly in love with Garance, Mehdi is spending the summer with his in-laws. As soon as he arrives, a conflict breaks out between Garance’s family (Laurent Lafitte and Élodie Bouchez) and their two housekeepers (Laure Calamy and Ramzy Bedia) who are illegally employed on a yearly basis. Tempers flare, but Mehdi thinks he can oversee negotiations between the two parties and help everyone see reason. Until the situation escalates, to irreparable effect…