On the advice of his teacher, young mathematician Sasha Shmagin went to Moscow to show the solution of an interesting and difficult problem to scientists. However, the boy did not make it to the professorship.
| Actor | Role |
|---|---|
 Vladimir YemelyanovNikolaiy Fomich | Nikolaiy Fomich |
 Sergei PetukhovSasha Shmagin | Sasha Shmagin |
 Nina MenshikovaNot listed | Not listed |
 Yuriy KuzmenkovNot listed | Not listed |
 Evgeniya UralovaNot listed | Not listed |
 Gennadiy YukhtinNot listed | Not listed |
 Svetlana NemolyaevaNot listed | Not listed |
 Olga AnikinaNot listed | Not listed |