Brave boys, known as taehniks, embark on a perilous quest to find a long-abandoned copper mine, despite facing numerous obstacles. Their journey takes a dangerous turn when they clash with an illegal claimant to the mine, the cunning hunter Anikin.
| Actor | Role |
|---|---|
| SSergey NaplavkovYasha | Yasha |
| YYuriy BobkovOska | Oska |
 Murat AkhmadievAlyosha | Alyosha |
| LLyudmila AlpatovaKrestya | Krestya |
 Marina KhatuntsevaViktoriya Petrovna Orlova | Viktoriya Petrovna Orlova |
 Georgi ZhzhyonovGrigoriy Anikin | Grigoriy Anikin |
 Arkadi TrusovGrandpa Makar | Grandpa Makar |
 Lev PolyakovFather Nikolay | Father Nikolay |
 Pyotr SavinNot listed | Not listed |
| GGavriil KotozhekovNot listed | Not listed |