After the world war, which turned almost the entire earth into a lifeless desert, but islands of hope and life still remained. Small enclaves of people around the world who are fighting mutants for the right to be called the top of the food chain. Sergei was an old-timer from the generation that still saw the real Sun, and not its faded silhouette behind gray clouds. Then he was sixteen years old - now thirty-six. Now he is a father, an SPZ fighter and a unit from Khmury’s unit.