The Second Flash produced even more terrifying monsters in the Zone than the previous catastrophes. And among them is the Master—the Chief Enemy—who possesses a powerful artifact that opens the inhabitants of the Zone a path to the outside world.
A free-wheeling wanderer in the past, a mercenary named Andrei Lunev, who quite recently managed to save all living things in the Zone, still didn’t know that the next task from General Ostapenko would give him a bright chance to either die himself—or, this time, save all of humanity.
The Thirteenth Sector, discovered in the Zone, clearly posed a greater danger than the other twelve. And now Lunev’s group is trying to проникнути into the upside-down world of the accursed sector and destroy it from within before the Chief Enemy manages to open a road for countless monsters and make the entire planet one giant Zone.