Exclusion Zone and Mainland. Do they have common laws? Do they have common enemies and friends? What can stop a person or make him strive to overcome boundaries? How does the mutual penetration of these two spaces affect each other? An officer left in the Zone after a failed large-scale operation returns home through all the obstacles and dangers. Stalker Beaver, who successfully escaped to the mainland and once rendered a great service to the anomalous territory, is forced to return to the Zone again in order to use the opportunity to extinguish the hunt that has begun against him.