The invaders are leaving the northern town of the young Soviet republic. The brave underground activist Alexei Ilyutinsky infiltrates a musical troupe organized to entertain the White Army command and boost the morale of the population. The new horn player, who has no musical ear whatsoever, passes on the White Army's defense plan to the Reds and saves Bolshevik Makeev, the former chairman of the provincial executive committee, from being shot.
| Actor | Role |
|---|---|
 Igor GorbachyovNot listed | Not listed |
 Konstantin AdashevskySergeant major Ivan Mokriy, regiment's musician | Sergeant major Ivan Mokriy, regiment's musician |
 Yuriy SolominNot listed | Not listed |
 Pavel KadochnikovNot listed | Not listed |
 Anatoliy PodshivalovNot listed | Not listed |
 Nikolay EryomenkoNot listed | Not listed |
 Nikolai BoyarskyNot listed | Not listed |
 Aleksandr SusninNot listed | Not listed |
 Arkadi TrusovNot listed | Not listed |
 Vladimir MarenkovNot listed | Not listed |
 Boris ChirkovNot listed | Not listed |
 Stepan KrylovNot listed | Not listed |
 Grigory MikhaylovNot listed | Not listed |
| NNikolay KuzminNot listed | Not listed |
| OOleg KhromenkovNot listed | Not listed |
 Yevgeni TeterinNot listed | Not listed |
 Pavel PervushinNot listed | Not listed |
 Lev StepanovNot listed | Not listed |
 Vladimir VasilyevNot listed | Not listed |
 Aleksandr MelnikovNot listed | Not listed |
 Lev ZhukovNot listed | Not listed |
 Valentina EgorenkovaNot listed | Not listed |
 Leonid ChubarovNot listed | Not listed |
 Konstantin KadochnikovKurakin | Kurakin |