It is now for the second time that the black Chernobyl erupted to open a Zone – a new horror of ill mankind. It was at that moment that hundreds of people turned into wordless toys of invisible forces, into insane toys with erased personalities. And there were futile attempts of the army to cope with the new disease of the planet, at least to prevent its development and spread, but to no avail. The Zone grew bigger. Only rarely people dared to set off for the Zone to find out, to procure evidence of weird and uncanny changes around Chernobyl Atomic Plant. Only a handful returned, bringing strange objects and stories of deadly traps and eerie animal mutants, they found out of somebody inside controlling the evolution of humanity, forcing it to leap towards unknown final. They became stalkers, those who leave for the changing world of the Zone to explore it and find artefacts, those who cross the Zone of immense territory covered with ulcers of black lakes, scorched earth, poisonous fogs, deadly anomalous zones, populated by sapient pseudo-animal mutants.