The thirteenth sector

Is it possible to save the world without going beyond the alienation zone? It turns out that you can. You just need to find out how this is done.
The former mercenary, nicknamed the Old, he did not suspect that the new task of General Ostapenko would provide him with the next opportunity to die or save all of humanity, without formally leaving the zone. Formally - because Andrei went to the hidden thirteenth sector of the abnormal zone, which posed a much greater danger than the other twelve.
Lunev’s group learned how to penetrate into the distorted space of the dangerous sector and how to destroy it from the inside before the owner of the hidden world releases countless monsters that will turn the entire planet into one giant abnormal zone. It remained only to put this knowledge into practice. But this was not so difficult to do