Everything starts with Commander Sugata, a scientist and sage who excelled in mental reinforcements and is a master of every martial art. He discovered the existence of the Royal Underground Empire Tube, a malignant force that desires to dominate the land, which is based underneath Japan. In the beginning, Tube was centered on pacifism. However, when Zeba assumed the throne, Tube began planning to conquer the world. The new goal of Tube had become turning the world into a cold and shady planet, conditions that would need to be achieved so that the citizens of Tube could live on the surface. In order to stand against them and thwart their plans, Sugata recruited five young people, each one specializing in a style of martial arts, and taught them in the ways of the mystical Aura Power energy.
