He had to live in an earthly hell, in a plague-ridden Zone, where most people died out from an unknown disease, and animals and plants turned into monsters. He was an intelligence officer. But the excess of danger and hatred inside the isolated perimeter turned him into a lone wolf named Gray. He has almost no friends, but too many enemies. To survive, he is forced to play a double game, provoke bloody fights, fight with people and the fiends of an enraged nature. He himself did not notice how the Zone connected him with a mysterious thread to the Epicenter, from which the disaster spread. Gray is the key to unraveling the sinister mysteries inside the Zone , and beyond.