Can ordinary people defeat someone who has mutated twice?
Residents of a town located near the Perimeter are forced to engage in activities that are not accepted to talk about. But when a dark blot from the growing Zone starts spreading across the Moscow region, it’s the skills of the local stalker called Algorithm that become necessary for all sorts of people—and not only people. Algorithm also loves to find connections between events that seem completely unrelated. And one day, precisely this quality will be the cause of a deadly dangerous situation.
Together with his accidental travel companion Vira, the hero enters into a confrontation with a mutant-from-mutants. But can ordinary people defeat someone who has mutated twice?