Observers are ordinary inhabitants of the Earth, but their goal is to capture as much 'Cruel Video' as possible and sell the material on the internet. A group of observers is offered to find the body of a hanged student in the forest for a good reward. They agree and fall into a deadly trap because the Ural Psychopath is hunting them.

In the tiny town of Nagievsk in the Sverdlovsk region, a catastrophe occurred. As a result of a failed experiment by scientists, the experimental virus they invented ended up in the drinking water, turning the townspeople into a horde of decaying undead, ready to devour anything in their path. Nagievsk was placed under quarantine and erased from all existing maps. Officially, such a town no longer exists. And it is precisely there that a young man named Max is heading from the nearby town of Porechensk. He must find the vaccine, which, they say, is hidden somewhere in the infected and erased settlement from life.