The poem retells the story of the warrior Rustum unknowingly slaying his long-lost son Sohrab in combat. Sohrab challenges the Persian army to a duel to seek out his father Rustum. Rustum reluctantly accepts and faces Sohrab in battle without knowing his identity. During the intense fight, Rustum lands a mortal wound on Sohrab. As he lays dying, Sohrab reveals to his father that Rustum is indeed his long-lost father, through showing a tattoo with Rustum's heraldry placed on him as a child. Rustum is overcome with grief upon realizing he has killed his own son.