The kingdoms of Yav, Nav and Prav live in peace and harmony under the reign of Veles, Perun the Thunderer and the prophetic birds Sirin, Alkonost and Gamayun. The treacherous goddess of death, Paliandra, seeks to sow discord in the relations between the divinities. Schoolboys Dima and Matveï must save our world and the world of fairy tales from disaster.