The Demonmechs, a race of fiendish metal creatures that once ruled the world, have returned to eliminate all of mankind. Lead by their king known only as, " The Chosen One ", they will stop at nothing to bring an age of chaos and tyranny to those that oppose them. From this uprising, a former Demon Mech King by the name of Jiro, suddenly appears with a vengeance. Jiro's mission: to reclaim the throne and destroy the man who once brought his reign to an end.