Soviet intelligence officer, Lieutenant Goncharenko, under the name of Baron Heinrich von Goldering is thrown into the deep German homeland on a mission to find out the location of the secret underground plant that produces new types of weapons.
| Actor | Role |
|---|---|
 Vadim MedvedevHeinrich von Goldering | Heinrich von Goldering |
 Zinaida KirienkoMonika | Monika |
 Olga ViklandtTaraval | Taraval |
 Agniya YelikoyevaLyudvina | Lyudvina |
 Mikhail BelousovEdward Strong | Edward Strong |
 Vladimir YemelyanovGas Station Attendant | Gas Station Attendant |
 Anatoly ReshetnikovMartin | Martin |
 Vsevolod AksyonovBertgold | Bertgold |
 Mikhail KozakovSaugel | Saugel |
 Boris DmokhovskyKubis | Kubis |
 Viktor MyagkiyEvers | Evers |
 Sergey PetrovGartner | Gartner |
| GGeorgi KozakovskiyLemke | Lemke |
| ZZhan MelnikovKurt | Kurt |
 Emma SidorovaLora | Lora |
| VVladislav BoleslavskyNot listed | Not listed |
| VVladimir BibikovNot listed | Not listed |
| ZZ. BrilNot listed | Not listed |
| AAleksandr GumburgNot listed | Not listed |
 Yevheniya OpalovaNot listed | Not listed |
| EEvgeny BalievNot listed | Not listed |
 Serhii ShemetyloNot listed | Not listed |
 Mariya Kapnist(uncredited) | (uncredited) |