The capital of the empire—St. Petropolis—is preparing to celebrate its three-hundredth anniversary. From all ends of the world, distinguished and titled guests flock to the Emperor of All Rus. And a private detective and amateur brewmaster Daga Turovsky receives a confidential request from an influential businessman. His friend and business partner disappeared under mysterious circumstances on the eve of signing an important contract that promises staggering profits. Daga Turovsky and his partner Gonza Kubintz take on the investigation, not knowing that above the capital an apocalyptic sword of fire is hanging.