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.

• Ryôsuke Kaizu
• Kouichi Kusakari
• Issei Hirota
• Yuki Nagata
• Kanako Maeda
• Hayato Tani
• Mina Asami
• Keijirō Shiga