A friendship made at the international pioneer camp in Artek is sealed by the gift of a live bear cub... Educators feared that the film might inspire young viewers to unscripted acts, but even the children didn't take this much-imagined story seriously...
| Actor | Role |
|---|---|
 Andrei FilatovYura | Yura |
 Vladimir SemyonovNot listed | Not listed |
| KKateřina TrávníčkováTsdena | Tsdena |
 Aleksandr DegtyarFather | Father |
 Valentina UshakovaMother | Mother |
 Zoya FyodorovaNot listed | Not listed |
 Rudolf DeylOdvázný | Odvázný |
 Vladimir DorofeyevNot listed | Not listed |
| MMarcela MartínkováNot listed | Not listed |
 Josef BeyvlNot listed | Not listed |
 Zdeněk DítěNot listed | Not listed |
 Vladimír MenšíkNot listed | Not listed |
| FFerdinand KrůtaNot listed | Not listed |
| HHelena BendováScribe | Scribe |
 Dimitri RafalskyNot listed | Not listed |
| AAntonín SoukupNot listed | Not listed |
 Jan HrušínskýNot listed | Not listed |
 Hana BrejchováNot listed | Not listed |
| MMirenka ZichováNot listed | Not listed |
 Vladimír ZátkaNot listed | Not listed |
| VVladimír NavrátilNot listed | Not listed |
| VVěra LaňkováNot listed | Not listed |
| VVáclav PodhorskýNot listed | Not listed |
| HHelena KačenováNot listed | Not listed |
 Aleksei Alekseyevdirektor shkoly | direktor shkoly |