
S01E01 The Mysterious, Beautiful Runaway
Five youths begin their battle against the underground forces of Tube as Maskman after they begin a war with the surface with the abduction of the mysterious Mio.
With Galaxy Robo in their hands, the Maskman head forth to save Great Five, unknowing of the difficulties of doing so and an unknown key to fully activate their new mecha.
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.