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.
The film depicts the events of 1964 when Nikita Khrushchyov was forcibly replaced by Leonid Brezhnev as a head of USSR.
KGB agents are organizing the disinformation campaign for a western spy.