Ever since his grandfather's disappearance, Edward Sting has become a recluse, dodging work and neglecting friends. With no one else to lament to about the oppressive ruler of Teradowa, Edward is left feeling empty inside. But everything changes when he receives a letter from his missing grandfather, tasking Edward to find him, and revealing there are other Realms outside the control of tyrannous King Sento.

With a newfound determination, Edward and his friend Cliff begin the journey across the Five Realms to Regnum, the darkest and most deadly Realm of them all. On his journey, unlikely alliances are formed and mysterious enemies threaten to destroy Edward's mission. Can Edward's ragtag bunch of heroes all be trusted? Or will they fail to find Edward's grandfather and chance losing the secret of the Five Realms forever?