In the BRI of Versailles, a historical unit specialized in organized crime, Saïd takes charge of a team of young elite police officers as audacious as they are effective. The former member of the Special Forces replaces Patrick, the charismatic boss who forged his legend as a policeman working for 20 years with Eric, the leader of a clan of the Parisian gang. Saïd will have to find his place within his group and, simultaneously, prevent a gang war from breaking out between Éric's family and that of the El Hassani brothers. But Patrick is determined to return to the limelight if Saïd refuses to take sides in this settlement of accounts that threatens to set fire to the capital. For this, he will seek the complicity of La Mongosta, a retired mercenary in Barcelona, who he will try to convince to help them.