For ten years, Attacus Lore has trained to become a Prion of the Church of the Priarch. With his training now complete, he must now undertake his Holy Order, a task created by Prophet Imran a millennium prior. Some Prions are asked to start farms, others are told to journey to distant lands. Attacus, however, is told to Kill the King. Witness his journey as he struggles to reconcile a decade of the Church's teachings with his own moral compass, which is further troubled once he remembers who the king is: his brother.