The twenties. Hungry and impoverished country. Lenin signs a decree on the protection of breeding livestock. Nevertheless, Ivanov's experiments become known not only to the country of the Soviets, but also to enemies working for American farmers. The Chekists become involved in Ivanov's research.
| Actor | Role |
|---|---|
 Sergei YakovlevIvanov | Ivanov |
 Lyubov SokolovaNatalya Konstantinovna | Natalya Konstantinovna |
 Georgiy YumatovBarabulya | Barabulya |
 Oleg EfremovYakushenko | Yakushenko |
 Pavel MassalskyVerigin | Verigin |
 Lyudmila KaraushNadiyka | Nadiyka |
 Vladimir GulyaevVorobyov | Vorobyov |
 Andrei TutyshkinAnisimov | Anisimov |
 Muza KrepkogorskayaOlga | Olga |
 Nikolay PogodinKuzub | Kuzub |
| SStanislav MininAstapov | Astapov |
 Vladimir LippartGorbach | Gorbach |
 Aleksei AlekseyevArkadiy Limantsev, perevodchik i rabotnik Vneshtorga | Arkadiy Limantsev, perevodchik i rabotnik Vneshtorga |