Big changes are coming to the life of twelve year old Masha after vacations on Kamchatka island. Her father spends most of his time sailing and lives in Petropavlovsk-Kamchatskiy, while the girl lives with her mother in Odessa. Masha had long dreamed of traveling to Kamchatka; now, the long-awaited day has arrived. Summer will pass in a flash for both father and daughter: Masha will spend two months with her father on Bering Island, befriend an Aleut boy named Radik, and convince her mother not to return to Odessa at all.
| Actor | Role |
|---|---|
 Lyudmila GravesMasha | Masha |
| BBakyt ArstanbekovRadik | Radik |
 Laimonas NoreikaGrigoriy Ivanovich | Grigoriy Ivanovich |
 Valeriy BarinovSamartsev | Samartsev |
 Dagba DondukovAfanasiy | Afanasiy |
| VValentina UstimovichSonya | Sonya |
| OOlga KimKatya | Katya |
| SSergey PolyakovLyonka | Lyonka |
 Viktor ChebotaryovStefanchuk | Stefanchuk |
 Svetlana KonovalovaNadezhda Sergeevna | Nadezhda Sergeevna |
| MMarina LobyshevaCameo | Cameo |
 German Yushkoкэп | кэп |
 Yuriy SorokinRadio Operator | Radio Operator |
| VVladimir TochilinWedding Guest | Wedding Guest |
 Zinaida SorochinskayaTrain Passenger | Train Passenger |
 Liliya ZakharovaTelegraph Operator | Telegraph Operator |
| MMarina ShchigarevaWedding Guest (uncredited) | Wedding Guest (uncredited) |
 Vladimir ShcheglovFellow Train Traveller | Fellow Train Traveller |
| YYelena StroyevaCameo | Cameo |
 Mira AbzhakanovaGanya | Ganya |