Following the death of his twin sister, Gaspard, a young music teacher, brings together his five former best friends in their deserted childhood school, in the middle of July.

Moussa has always been gentle, altruistic and present for his family. This is the opposite of his brother Ryad, a TV presenter of great notoriety who is reproached for his selfishness by his entourage. Only Moussa defends him, who has great admiration for his brother. One day Moussa falls and hits his head violently. He suffers a head injury. Unrecognizable, he now speaks without a filter and tells his relatives the truth. He ends up falling out with everyone except Ryad.

When Rose, an eccentric agent from French Intelligence Agency offers Scorpex, a once-famous DJ on the downslide, the opportunity to take down popular rival Vestax, he sees it as a chance to revive his career with a bang.