Evil tongues slander good Prince Siyawush at the court of Afrasiyab, his father-in-law and king of Turan. Finally, the king decides to have Siyawush murdered, and also has his daughter Farangis whipped to make her abort the couple’s unborn child. Farangis and her son, Kay Khusraw, miraculously survive, and in time, he revenges his father’s dishonorable death.