After the death of the king of Serbs, his two sons fight each other to be a king. Lazar the younger son manage to gain control and have his allies around him, his mother sister and his older brother flee the country but Lazar can't be a king without the holy crown of the kingdom which its location is known only for the queen, while that the ottoman sultan sends one of his best men Malkoçoglu Ali Bey, to stop Lazar and restore the rightful heir to the throne without knowing that the prime minister in his court is plotting against him.