The demon lord you're supposed to fear turns out to be the only one willing to fight for the people everyone else considers expendable. What starts as a rescue becomes something stranger: a man stripped of his name, his past deliberately erased, building a found family out of the people who were supposed to be his enemies. Arthur thinks he's saving his sister from evil. He walks into a story where the evil was always on the throne, not in the shadows.

The Holy Empire is spreading across neighboring lands, and its conquest finally reaches Erin, a small island that is home to the Gael tribe. There the priestess Riannon is seized to be offered up as a living sacrifice to Arawn, a resurrected demon king feared for past destruction. Her brother Arthur, the tribe's First Warrior, sets out to rescue her. Arawn then defies the people who revived him and frees Riannon, who comes to admire him. Keeping his true identity hidden, he lends his strength and leadership to the Gael. Joined by a gifted swordsman, a nimble hunter and a band of cheerful pixies, the group resists the Empire and uncovers dark secrets about their land. The series is an action fantasy adventure adapted from a strategy role-playing game by Leaf.