Balian is a veteran warrior nearing the end of his life, and has no intention of getting involved in any conflicts. But when his neutral realm is cruelly encroached upon by the warring factions of the Crusades, he is forced to act to protect his people. Soon, he is pulled into a dangerous quest to recoup the Holy Grail, an object with purportedly unparalleled supernatural powers. Balian must cautiously navigate through treacherous battles, political intrigue, and clashing religions as he strives to avoid catastrophe and protect his people.