Senior criminal investigation officer Kirill Starkov, as part of a detachment of a temporary task force, is sent on a business trip to the North Caucasus. There he and his new acquaintances, FSB officer Konstantin and police captain Umar Dzhankaev, are trying to track down members of a gang led by an unknown person with the call sign “Oculist”, who appeared in these places on an unknown mission. Having returned to his department after being wounded on a business trip, Continuing to fulfill his official duties, Starkov begins to realize that the bloody plans of the militants and the ghostly “Oculist” are leading to his hometown. Contains obscene language.