Taking place in a fantasy world, the story focuses on Luke fon Fabre, a young swordsman whose pampered life turns upside down when he unwittingly becomes the target of a military-religious organization known as the Order of Lorelei, who believe him to be the key to an ancient prophecy. Together with his companions, Luke attempts to discover the truth and significance of his own birth, as well as unravel the mystery of The Score, the prophecy that has bound humanity's actions for thousands of years.