Kharm fell on St. Petersburg, bringing with it disasters and death. The site of the city is now the Northern Zone. New types of anomalies cause disasters and disasters, hordes of mutants attack the surviving inhabitants. Hunger, chaos, streams of refugees finally plunge the city into hell, on the streets of which creatures, as if escaped from the underworld, and bipedal predators, not much different from them, prowl. But the worst thing is that for the first time people have to deal with more than just anomalies or predatory creatures. This time they are confronted by a powerful inhuman mind, generated by the Zone, and perhaps the one who gave birth to the Zone. The authorities and the army find themselves helpless before the catastrophe breaks out, and those who were considered outcasts in normal times - stalkers - come to the defense of people. It is they, the former teacher Rainbow, the leader of the free vagabonds Dragon, the psychic Natalia and their comrades who will have to give battle to the mysterious ruler of the Zone. A battle on the results of which the fate of the human race may depend.