The Department of Internal Security, abbreviated OSB, is one of the most closed units of the Ministry of Internal Affairs and one of the most unpopular in the system. After all, his employees are hunting for werewolves in uniform. This hunt is unpredictable and can be deadly. And if an informal relationship arises between a hunter and a werewolf, it generally gets out of control. OSB employee Olga Gorina receives information that territorial police department operative Kirill Kopeikin is involved in the murders of major drug dealers. Having started development, she gets to know Kopeikin better and starts an unexpected game, not realizing that she herself is already part of an even bigger game.