First part of a series of five famous children novels. Adventures of a group of kids in a trip to explore a cave, where they have some surprises.
| Actor | Role |
|---|---|
 Ion MarinescuPetrăchescu | Petrăchescu |
| PPetre Gheorghiu-DoljBearded Man | Bearded Man |
 Ernest MafteiOld Man Timofte | Old Man Timofte |
 Nicolae DinicăEng. Florescu | Eng. Florescu |
| AAlina DumitrescuMaria | Maria |
| RRăzvan BaciuȚic | Țic |
| RRobert EnescuIonel | Ionel |
| HHorațiu ModveșanVictor | Victor |
| GGabriel SârbuUrsu | Ursu |
| AAlina CroitoruLucia | Lucia |
 Alex RotaruDan | Dan |