Malkoçoğlu Ali Bey, who learned the location of his treasure on the condition of sparing his life from Don Casetti, dies in Çaldıran. Thereupon, Mahmut, the man of Prince Murat, the nephew of Yavuz Sultan Selim Han, who claimed the throne, kidnapped Malkoçoğlu Doğan Bey, one of Malkoçoğlu's children, and Doğan Bey was named Duke D ' Kanuni Sultan. Süleyman Han, who heard about Mahmut's actions, sends Kurtbey, the other son of Malkoçoğlu, to control Doğan Bey but later learns his true identity.