The Season of Disasters continues! “Grays,” mysterious creatures capable of taking on any form, terrorize the population of territories adjacent to anomalous zones, which, like non-healing ulcers, covered all the continents of the Earth. To cope with this and other misfortunes of the Season of Disasters, a secret experiment was conducted under number 431. The consequences were not long in coming. And it’s up to the veteran of the Survival Game, the experienced stalker Andrey Lunev, to sort them out. The Master of the Game is on his side, but the sinister Challenger has not yet laid down his arms...