It is the word "horde" that had meant, for many countries and nations, bloody raids and being under humiliating contributions for centuries: a strange and terrifying world with its own rules and customs. To be or not to be for Rus (Ruthenia), that is the price of a single man's mission, since he departs to this world to achieve a feat. The film tells the story of how Saint Alexius, the Metropolitan of Moscow and Wonderworker of all Russia, cured the Tatar queen Taidula, the mother of Jani-Beg, of blindness in 1357.