By the will of fate, a man from our time ends up in the early seventeenth century in the body of a real prince. Luckily, did it work out? It seems so. He is the Grand Duke of Mecklenburg, a well-known military commander, married to a princess, and the king of Sweden is his best friend. But somewhere very close, devastated Russia is torn by the Time of Troubles—proud boyars, greedy robbers hunting along the roads for loot, rogue Cossacks supporting one impostor or another. And there is no choice. Now he is Tsar of All Rus’, Ivan Fyodorovich—yet will he be able to unite the country, because every time he faces enemies face to face, someone is trying to put a knife in his back.