Grisha, a teenager from a privileged family, moves from Volgograd to Kazan and finds himself in the midst of a street gang war. He is a stranger in this world, but in order to survive, he has to learn its cruel rules. Zakharevich, the ideologue of the Tyap-Lyap gang, becomes an unexpected mentor for him. He is an intelligent, educated and ambitious manipulator who created a system for dragging teenagers into organized crime. The only one who is aware of the impending threat is the head of the criminal investigation department Nikonov. It will take time for him to understand that this is not just a criminal outburst, behind which there are non-ordinary figures, but the beginning of large-scale processes capable of destroying the country.