The hero Topia finally defeated the Demon King Zamos. However, the evil giant cast a spell of "mental death" upon the hero in his dying breath. Lives she couldn't save, unforgettable arch-enemies... Topia is tormented by the things she sacrificed during her journey, now trapped in the darkness of her heart.

Just as the hero's steel-like heart is about to shatter, a light shines into the world of darkness.

Standing there was Guest, who was supposed to have died in the middle of the journey...