While carrying out a combat mission in Syria, a lieutenant colonel of the Russian army dies at the hands of traitors. It would seem that this is the end - an inglorious death in a godforsaken Arabian desert. But fate gives him a second chance: his consciousness is transferred into the body of an ordinary high school student living in the Soviet Union. 1984. Knowledge about the future can be easily used for your own purposes. Become anyone, get rich, take a high position. But the lieutenant colonel sets himself a daring and incredible task - to prevent an accident at the Chernobyl nuclear power plant...