Strange things have been happening in the Zone for some time now. Entire territories disappear, and others appear in their place. Never-before-seen mutants are increasingly being spotted in the forests. And behind all this one can discern the consequences of a failed scientific experiment. Everything must be corrected by the expedition, the leader of which, taking into account all the mistakes made earlier, is ready for any surprises. But in the Zone you cannot provide for everything, even if you have a whole armored train at hand. And where irresponsible scientists, greedy bandits and stalkers come together in a desperate struggle for their interests, any victory may turn out to be Pyrrhic.