Under the blessed sun, decorated with apricot blossoms in the spring, and abundantly dusted with dust in the summer, a small town freely spreads out. Slavyansk is how it is marked on maps, although some people call it something completely different. Not many people know this name, although it appears in many interesting documents. The inhabitants of the city are gloomy and angry. Their faces are gray and expressionless, because they don’t know what an interesting place they live in. Yurka Panyushin also did not know for the time being, and did not even suspect how this knowledge would change his entire long life. What mysteries are hidden in the mysterious “Object-4”, located in the dungeons of the High Voltage Research Institute, and what generally happened in the dark, hidden past for it - Yurka passionately wants to know about this. While searching for himself, Panyushin will meet acquaintances from his past life. The elusive commander of the Chelyabinsk special squad, Captain Kozulin, the mysterious Doctor Mezentsev, even the vaguely familiar voice in the telephone receiver - each of them plays by special rules, following their own interests. Perhaps their interests will intersect one day at a single point in space? What is the source of the mysterious power that Yurka possesses? What happened during the work on the Leningrad-28 project - the main character dreams of learning about this and much more, or rather, remembering. Will he succeed? Let's hope...