The main character of the film is a little boy named Marek, who from an enemy of nature becomes its devoted friend. Before this happens, however, fate plays quite a trick on him. At first, however, nothing foreshadows this. Marek arrives in the forest with a school trip. He quickly separates himself from the rest of the children, after which he gives vent to his hooligan fantasy. He destroys an anthill, cuts a tree with a knife, tries to catch a spider. When he fails, he starts chasing a butterf...