Overview
The telefilm follows the fun adventures of two average students, Vovka and Valerka, who, while searching for an underground river, realize that their efforts won't succeed without knowledge.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 11 | February 26, 2005 (35) | |
 | - | - | |
 | 59 | November 8, 1987 (66) |