Our contemporary, Yegor Voznikov, by his own will suddenly found himself in the year 1409. Leading a band of ушкуйники—river pirates—he managed not only to settle in medieval Rus, but also to find his beloved woman, Elena—no ordinary woman, but a princess! It was she who prompted Yegor to think that it was time for him to become a prince himself.
However, other local rulers don’t want to recognize him as an equal, and the grand prince Vasily threatens to hang him for impersonation, like a common robber. And on top of that, the treacherous Horde stands in Yegor’s way, where the old emir Edigei—an old enemy of Rus—still seats on the throne the khans who suit him. There are plenty of contenders for the Horde’s throne—all the Chinggisids, the sons of Tokhtamysh, who sincerely hate one another. The curved Horde sabre hangs again over Russian lands. While the Tatars are fighting among themselves, Yegor, Prince of Zaozerye, understands that another chance to subordinate the Horde to himself might not come… And behind his back hides mighty Lithuania—strong and dangerous enemy—Prince Vitovt.