Agent of special department "Piranha" Kirill Mazur and his colleague Olga go to the far north with the assignment to liquidate an underwater secret weapon lab in the guise of a mutual vacation. All of a sudden, they find themselves in the world where civilization laws are forgotten, and this deadly weapons are kept by gangsters who are controlled by a new "master of taiga" Prohor, whose leisure time is spent hunting at humans. Mazur didn't know that he would have to
