Shoulder to shoulder they fought in the hot spots of the planet, went on raids together, saved each other’s lives. But now they stand on opposite sides of the barricade. Anton became an outlaw, a ruthless killer nicknamed Karas, and Vadim became an undercover FSB officer. Fate pits them against each other in a mortal battle that unfolds around Russia's gas reserves. Everyone came together in it - bandits, oligarchs, high-ranking officials, intelligence services from different countries... When such a jackpot is at stake, what will be left of the former military friendship?..