The first postwar years. The Director of a small breeding station Avdotya Pavlovna is not immediately convinced of the anti-science of the official Lysenkov direction in biology. But making sure leaving the farm as an ordinary agriculturist, where he works on breeding new wheat varieties on the basis of the persecuted Lysenkova chromosome theory of heredity.
| Actor | Role |
|---|---|
 Zinaida DekhtyaryovaAvdotya Beloborodova | Avdotya Beloborodova |
 Valentina VladimirovaSchool principal's wife | School principal's wife |
 Izolda IzvitskayaNyura | Nyura |
 Ivan DmitrievShamray | Shamray |
 Mykola Hrynkoschool director | school director |
 Zinoviy GerdtGorbis | Gorbis |
| SSemyon LikhogodenkoСollective farm chairman | Сollective farm chairman |
 Eduard BredunPasha | Pasha |
| GGalina ButovskayaNot listed | Not listed |
| GGalina GoryachevaNot listed | Not listed |
| VV. KalenkovNot listed | Not listed |
| AAleksandr MilyukovNot listed | Not listed |
| AAndrey Vilinskiy-BogolyubovNot listed | Not listed |
| AA. GryzanNot listed | Not listed |
 Leonid ZhukovskiyNot listed | Not listed |
 Marko TereshchenkoNot listed | Not listed |