After taking time off, The Knight Sabers are back in action, thanks to a string of robberies performed by an evil organization called the Illegal Army, who takes up arms and destroys the peace in MegaTokyo.
A new type of Boomer with advanced AI is stolen! Now it's up to the newly re-formed Knight Sabers to get it back! However, they'll have their hands full with a group of Combat Boomers headed by a criminal scientist who is vying for the end of the Sabers.
