A co ten ruksak, králi? (1986)

In one kingdom, there was a stupid king. And he suddenly became wise because he met a magical grandfather who gave him a backpack. Who would have thought that it was possible to carry wisdom in a backpack? The subjects of the king, who came to his senses in such a strange way, certainly did not know this. But not for long. And so the king had to earn his wisdom and his beloved bride...