Vasek and Honza, two pupils of an elementary school in a small village, artfully move through the expositions of the Brno fair. They collect many leaflets, thoroughly inspect everything and constantly gorge themselves with various delicacies, which gives Vasek a bad stomach. The next day, however, everything is all right. These two boys, whose overactive imaginations keep them far from the top of the class, tell their classmates about their adventures, both real and made-up. In their dreamed-up world, there is an automatic machine which can fulfill one wish to everybody.