Three friends - Tomás, Hubert and Jozka - are boys growing up in a little town. Tomás lives with his aunt Apolena (Iva Janzurová) and uncle Václav (Karel Augusta), who holds every job title at the little railway station, although in fact both the station and the household are run by energetic Apolena. Tomás is a boy with lots of ideas that often end up getting him into trouble not only with his teachers and aunt, but with the other inhabitants of the town as well. He has a crush on his schoolmate Blanka and for her sake he decides to try and get the prize for the best pupil in the school - an illustrated copy of Old Bohemian Legends.