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.
After discovering a time tunnel to 1960-ies a journalist decides to make some cash out of it.
Wartime, summer 1941. Train carrying criminals gets under enemy fire and crashed. Out of all of the living are only a young lieutenant of the NKVD and two prisoners - the thief and repressed Communist party worker.