Manu lives in a dictatorship of happiness, a world of constant well-being where sadness is strictly prohibited. But his heart has been broken, and acting happy is becoming increasingly complicated. One night, a black marketeer named Lisa offers him something that can only be found under the table: mournful and gloomy music.
Despite the life threat hanging over his head, Stéphane decides to go back to Corsica for the funeral of Christophe, a childhood friend and companion in arms, murdered the day before. On this occasion, the chain of events which made him, the learned petit-bourgeois from Bastia, shift from delinquency to political radicalization and then to clandestinity, comes back to his mind....