Amir is the son of a wealthy Kabul merchant, a member of the ruling caste of Pashtuns. Hassan, his servant and constant companion, is a Hazara, a despised and impoverished caste. Their uncommon bond is torn by Amir's choice to abandon his friend amidst the increasing ethnic, religious, and political tensions of the dying years of the Afghan monarchy, and apparently dissolved when Amir and his father flee to California to escape the Soviet invasion, leaving Hassan and his own gentle father to a terrible fate.
But years later, an old family friend calls Amir from Pakistan and reminds him: "There is a way to be good again." And Amir journeys back to a distant world to try to right past wrongs against the only true friend he ever had.