Using an elaborate system of denunciation, the chief of the Zone keeps his prisoners in check. A new inmate, allegedly imprisoned for speculating on postage stamps, tries to rebel against the system.
Fifteen year old gifted teenager Ruslan Chutko longs to do good and help the police to identify offenses under the pseudonym Plumbum. Plumbum decides in a single provincial town to eradicate the evil. However, in his interest of being a fighter against evil he goes far beyond what is permitted in a children's play and ends up ruthlessly invading people's lives.
