An original television play set in a village setting about an honest young man, Miš, who is credited with punishing his greedy neighbors - the village herald and his wife, who find a cauldron with gold ducats in an abandoned log cabin in the forest.

An animal lover, Miloš , brings a small mouse to school, which causes a lot of excitement in the classroom. Miloš remains for punishment after school, however, when the teacher notices that Miloš is bringing lunch to his sick grandmother, she lets him go home. However, Miloš cannot get home with lunch. Somewhere, he lost the key he wears on the string around his neck.