Rostam was following the traces of Rakhsh in the kingdom of Samangan. when he was the guest of the king, Tahmina, the king's daughter admires Rostam and goes into his room and asks if he will give her a child, in return, she will bring his horse. Rostam impregnates Tahmina and Rakhsh is returned. He gives her a token. she binds the seal on the boy's arm whom she names Sohrab.
A war between Iran and Turan started. Sohrab has become known as the best fighter in the Turan army so Sohrab is sent to wrestle with Rostam. Though Sohrab knows his father's name, he is unaware that the man before him is Rostam. They fight and Rostam tricked Sohrab and breaks his back. while he was dying tells Rostam that his father will avenge his death. Sohrab shows the armband. Rostam grieves and asks to get the medicine but it came too late.
In this picture, you can see that Sohrab is the main hero of this war with the ascension of his soul, and Rostam is burning in the fire of his sorrow and regret.