The distant Emerald planet has discovered a secret plot on Earth so diabolical that it threatens the entire galaxy. The rogue nation of Mirapolia is distributing atomic weapons throughout the globe, determined to rule the world or destroy it. The high council of the Emerald planet sends their bravest hero, Starman, to defeat the Mirapolians and remove the deadly menace. Drawing equally on the unabashed heroics of the original "Superman" series and the atomic fear of Godzilla films, the Japanese television series "Super Giant" was assembled into full-length features for American audiences. The combination of martial arts action and sci-fi thrills made for an unusual and stunning adventure, unmatched even today.