Sliding, skiing, snow forts, snowball fights, in short, winter is the right season for the children from the village under the Šibeničák hill to have fun. Their leader has always been Zrzek, the son of the local undertaker. But then Myšák, whose father had become the chairman of the agricultural cooperative, moved into the village, and he pulled all the boys to his side, especially because he could take the boys on the horses his father sometimes lent him. Proud Zrzek left the group rather than submit to Myshak. Only his friend Barbora remained faithful to him, helping him catch birds, especially the proverbial black raven.

Sixth-grade pupil Katka daydreams during a math class about being Snow White and being freed by a prince who looks very much like Dzery from the eighth grade. Katka, her girl friends Lenka and Martina, and her fellow-pupils Franta, Joska and freckled Vrabcák, have spent five years going to the same little one-class school in their home mountain village of Pastvina. Their kind teacher Smetácek was very understanding about their games and fantasies, but he didn't teach them much about arithmetic. They are now laughed at for their ignorance by the strict Bidlo, their new teacher at the near-by little town. As he does every year, Smetácek is preparing a theatre performance with the local children. Katka suggests the fairytale about Snow White