Georgy Knyazev is a former Airborne Forces officer who left service to find the killers of his family. Having found and brutally punished the scoundrels, he is forced to flee to the distant past, to Rus' shortly before Batu’s invasion. Calling himself a descendant of the ancient dynasty of Basileus, Knyazev with his friends and associates settles among the forests and swamps to implement his plan to build a Glorious Fatherland. And the Mongols will terribly regret that they decided to stick their nose into the affairs of the Rus Corporation...