Seventh-grader Vitya Davydov is sent to a factory for practical training. His mentor, a worker nicknamed Goliath, gives him an assignment, unaware that their relationship is about to become a battle of wits.
| Actor | Role |
|---|---|
 Aleksey PetrenkoГолиаф | Голиаф |
 Aleksandr SoldatovВитя Давыдов | Витя Давыдов |
 Yuriy Chernovшофер грузовика | шофер грузовика |
 Lev Lemkeврач | врач |