In the 5th century BC Cyrus Spitama, a plenipotentiary of the Persian Empire, travels the world meeting the founders of major philosophical traditions in Greece, Persia, India, and China. Through encountering the beginnings of these ancient traditions, Cyrus puts them in dialogue with one another. He frequently compares one tradition with another and wonders what his past interlocutors would think. The origin of creation, mind-body distinction, and ethics are compared.
Cyrus is the grandson of Zoroaster and while witnesses his death at the hands of a roving Turanian warband. At the moment of his death, Zoroaster had been speaking a prayer that rhetorically questioned how one could know the difference between the righteous and wicked. Afterwards, Cyrus dreams repeatedly of Ahura Mazda, the "Wise Lord" speaking through the dying Zoroaster, giving him a cryptic edict that all who seek Truth will meet the same fate.

Exceptional!