In an old world clash between light and darkness (as always), the evil Lord Uongadis is sealed away under a gigantic monument called the Earth Blade. 20 years have passed since the wars, and now the threat of evil being brought back is greater than ever as demons try to revive their lord.

Adeos, vaillant chevalier, sans peur et sans reproche, part en guerre contre le Mal. Au gré de ses aventures, il rencontre la Princesse Patti, Messire Itoumi son garde royale et Satobi, un chevalier des Royaumes des Ryus.