An adaptation of the children's novel "Dunno in Sun City" (1958) by Nikolay Nosov. Dunno is a Mite living in Flower Town. As a reward for protecting a wizard from an attacking animal, Dunno receives a magic wand from the wizard. But his benefactor warns him that three bad deeds are enough to render the wand useless. Dunno visits Sun City to experience its technological marvels, but he unwittingly creates a gang of hooligans who threaten the city's safety. After his wand is rendered useless by misuse, Dunno has to find a way to restored the city to its previous state. He asks the wizard for advice on the matter.
