Agu Sihvka, his friend Juhan Kiilike and other fourth class pioneers are energetic youngsters. Unfortunately their ventures do not always go as planned, and Agu Sihvka there again have to sit down and write an explanatory letter to the head of the class or principal, to report on how things came to so unexpected consequences.
| Sound | Heino Pedusaar | Sound Director |
| Editing | Liidi Aas | Editor |
| Crew | Anneliis Simm | Supervising Technical Director |
| Editing | Tatjana Elmanovitš | Editor |
| Writing | Jaan Rannap | Writer |
| Writing | Jaan Rannap | Author |
| Camera | Raimi Tonts | Director of Photography |
| Art | Silvia Mere | Art Direction |
| Directing | Elvi Koppel | Director |