A mysterious deadly disease rapidly spreads across the country, and no one can withstand it. Like one of the riders of the Apocalypse, it mows down entire cities. Where did it come from? What caused the pandemic? And the most important question: how can it be stopped? Maksim Ognev must once again look into the eyes of his nightly nightmares and return to the Zone of Detachment to answer these questions and save humanity. Only Maksim doesn’t suspect that the epidemic is nothing more than a cover for a terrible and merciless war happening right now. And the outcome depends on which side you’re on—will you stay alive or die.