The story begins with a huge monster lurching around preparing to eat the world. But a small band of brave knights in mecha sacrifice themselves to seal him away beneath a huge sword (and i'm talking thousands of meters huge). He's not dead however and yars later his people, the demons, believe the time is right for him to be revived and finish what he started. As such they begin to move against the forces which hold him prisoner. There's a young girl vital to maintaing the seal, but while a powerful sorceress she's no match for the demons. She's aided by a survivor of the original group, but he's got his own problems. The most they seem to be able to do is run as one fortress after another is destroyed by the demons. While seeking allies they find a hot-headed youth focused on becoming a great knight and a young ninja boy seeking vengeance. And both of these youths have obtained and been accepted by a Ryu knight mecha...making them a force that just might be able to stand in the way of the demonic awakening. <br />