It's the winter of 1983. A team of experienced loggers sets off for a remote northern logging site on the upper reaches of a nameless river. Almost immediately, anomalies begin to appear in the taiga: deathly silence reigns, something is biting through steel chains and tearing moose carcasses in half, methodically clearing the snow around their kills. An old worker realizes the truth—they've set up camp on the territory of the Key Master. This massive, bipedal predator doesn't just kill, but studies its victims, smashes into walls, and flawlessly imitates human voices. To survive and escape with an old tractor, the loggers will have to engage in battle with the yeti. But the most terrifying thing is that this creature can find its prey even after twenty years, climbing to the ninth floor of a concrete city. Sources of information and evidence:
— Classified archives of the USSR Ministry of Forestry on the unsolved disappearances of entire brigades (1970–1985);
— Testimonies of taiga hunters on the habits, track structure, and onomatopoeia of relict hominoids;
— Police reports on attacks by "unidentified large predators" in northern latitudes.