XIII century. The Russian lands have recently been subjected to a Tatar-Mongol invasion, Mongol troops are stationed in the cities of Galicia, and Basque governors are collecting Horde tribute. At this time, the Galician prince Daniil dies, bequeathing the princely throne to his youngest son Shvarn, bypassing the eldest Lev. Lev is deeply jealous of his brother, and considers the main culprit of his anarchy to be the Lithuanian prince Voishelg, who in the days when Daniel was dying supported Schwarn’s claims. Voishelga’s sister, young Aldona, Shvarn’s wife, is afraid that her weak, sickly husband will not remain on the throne, and then fate brings her together with Lev’s young assistant, Varlaam. Aldona decides that for the sake of her family she must suppress her love for the “enemy”...