The kingdoms of Yav, Nav and Prav exist in peace and harmony under the rule of Veles, Perun the Thunderer and the prophetic birds Sirin, Alkonost and Gamayun. The insidious goddess of death Palyandra seeks to sow discord in the relations of the deities. Schoolchildren Dima and Matvey have to save our and the fairy-tale worlds from disaster.
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