After the death of the feeble-minded Tsar Fyodor Ivanovich, son of Ivan the Terrible, Boris Godunov takes the throne, by the decision of the Zemsky Sobor, with the help of intrigues, alliances and the arrangement of his sister Irina's marriage to Tsarevich Fyodor, gains great influence and power in the court.
After the death of the feeble-minded Tsar Fyodor Ivanovich, son of Ivan the Terrible, Boris Godunov takes the throne, by the decision of the Zemsky Sobor, with the help of intrigues, alliances and the arrangement of his sister Irina's marriage to Tsarevich Fyodor, gains great influence and power in the court.