A thought equals action, a name equals man. When Petryk, a schoolboy, just mentally takes revenge on his classmates and erases their names from a letter to him, they disappear from the real world and fall into the land of Baroniia. In order to save them, Petryk must change himself and discover the secret of Baroniia. Together with his friend Katya and teacher Bo-Bo, Petryk goes to Baroniia to return their friends. Petryk turns from an avenger into a hero and conquers the cruel world of Baroniia.