Follows the life of the Russian mathematician Sofya Kovalevskaya.
| Actor | Role |
|---|---|
 Yelena YungerSofya Kovalevskaya | Sofya Kovalevskaya |
 Lev KolesovVladimir Kovalevsky | Vladimir Kovalevsky |
 Tamara SezenevskayaAnna | Anna |
 Bruno FrejndlikhKlaus fon Shvedlits | Klaus fon Shvedlits |
 Olga PorudolinskayaPraskovya Nikitishna | Praskovya Nikitishna |
 Aron PodgurNot listed | Not listed |
 Vladimir UskovNot listed | Not listed |
 Yevgeniya VolkovaNot listed | Not listed |
 Alexander ZhukovNot listed | Not listed |
 Pavel SukhanovNot listed | Not listed |