Centuries ago, the arch-devil Zeniar attacked the world of Dornat and very nearly conquered it. However, a mysterious man appeared, wielding a pendant of radiant blue and drove the arch-devil into the Void. The world became peaceful once more. Several hundred years later, Zeniar returns and Natsumi Samao, the distant descendant of the mysterious Hero must undertake her own journey to recover the Pendant and finish what her forefather started.