After catching the Plague Doctor, Igor Grom became a symbol of peace for all of St. Petersburg. His life is perfect—during the day, he catches criminals with his partner Dima Dubin, and in the evenings, he spends time with his girlfriend Yulia Pchelkina. However, everything changes abruptly when arms magnate August van der Holt arrives in town to sign a contract to modernize the police force. To do so, he enlists the services of a mercenary nicknamed Ghost, who is tasked with eliminating Grom and sowing panic among the peaceful population.