A bunch of pernicious salamander men from the planet Kulimon in the Moffit Galaxy plan on taking over Earth by unleashing a lethal plague on mankind. It's up to valiant superhero Starman from the Emerald Planet to save the human race before it's too late.
Super criminals are planning to infiltrate Earth with mass nuclear destruction! Only Starman can defend civilization by thwarting evil!
An evil brain from outer space unleashes monsters with deadly diseases on Earth with trying to conquer the universe. Superhero Starman must battle them all to save his planet.
El superhéroe Starman (o Super Giant) es enviado por el planeta Esmeralda para proteger la Tierra de unos alienígenas provenientes de la galaxia Zafiro. Los zafirianos secuestran al doctor Yamanaka y lo fuerzan a usar su nave espacial contra la Tierra. La película junta las partes 5 y 6 de la serie "Super Giant" (1957-1959).
