"There is an unknown power hidden inside the human body. If you train as hard as you can, the power revealed will be unlimited!"

Everything starts with Commander Sugata, a scientist and sage who excels 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, located underground Japan.

In the beginning, the Tube was centred to pacifism. However, when Zeba assumed the throne, they began planning to conquer the world. Their goal was to turn the world into a cold and shady planet, suitable for their living conditions.

In order to stand against them and thwart their plans, Sugata recruited five young people, each one specialized in a style of martial arts, and taught them in the ways of the mystical aura power energy.