Foreign intelligence agent Mirsayid, captured by Soviet border guards, is sentenced by a court to a maximum security prison. He manages to conceal the location of the cache where the map is stored. Soon, new agents, Loinab and Guliam, successfully cross the border. Their goal is simple: to visit Mirsayid in the colony, find out the location of the cache, and retrieve the hidden map. The Chekists give them complete freedom of action for the time being.
Vadim Medvedev
Aleksandr Parkhomenko
Aleksey Eybozhenko
Boris Stavitskiy
Yevhen Shakh
Irina Skobtseva
Antonina Leftiy
Otar Koberidze
Efim Kopelyan
Oleksandr Bystrushkin
Boris Goldayev
Viktor Verkhoglyadov
Givi Jajanidze
Heorhiy Babenko