Commander Sugata discovered the existence of the Royal Underground Empire Tube, a malignant force that desires to dominate the land, which is based underneath Japan. He recruits five young people, each one specializing in a style of martial arts, and teaches them in the ways of the mystical "Aura Power" energy. A year after he recruited and trained the Maskmen, Tube is ready to strike.
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Asuka Hanyu, a lone wolf who will stop at nothing to investigate, is a cool beauty who throws away her voluptuous body and strikes her enemies right between the eyes. This female detective infiltrates the Taiwanese mafia. However, her identity is compromised when someone tips her off!
