Sergei Volkov lost his parents in early childhood, so he lives with relatives who are not really happy about him, because he has a difficult and independent character. When they go on vacation, our hero goes to his grandfather German, who has lived for many years in a nature reserve. Beautiful nature, a truly close, dear person—what could possibly go wrong? And in fact, it all begins like ordinary holidays. Only Sergei still doesn’t know what power lurks in this reserve, what’s wrong with the kids from the nearby camp “Edelweiss,” and, as it turns out, how little he knows about himself too…