One snowy night, the Amami couple who has no child encounter a huge white lion-shaped robot, which holds a baby. When they fearfully take that baby, the "lion" suddenly flies away. Though puzzling, Amami couple are happy to accept that baby as their own child. Eight years later, the time is 2005 A.D. Without notice, a Zonder appear at the Tokyo Bay, merging with debris and a passing ship which have kids on its deck, advancing to Shinjyuku - the center of Tokyo. The Japanese Self-Defense Forces' conventional weapon has no effect and some kids are taken hostage. But there is the hero who stands against that Zonder Robot. His name is Guy the Cyborg, the commander of GGG's Mechanized Unit. The GGG ("Gutsy Geoid Guard") are the newly-made Japanese secret defense forces against the extraterrestrial invasion.

Meet Bolt Crank, mercenary extraordinaire, and the man who eats metal! Through his travels, he stops along the way to make a few bucks and occasionally rescue damsels in distress. His taste for metal gives him quite an edge as he becomes capable of generating an assortment of weapons from his hand! It's a strange ability, but it seems to come in handy, so to speak. Bolt has an edge over his adversaries, but will that be enough?

Honey Kisaragi est une lycéenne de l'école de jeunes filles Sainte Chapelle. Le jour de son 16e anniversaire, alors qu'elle rentre chez elle, elle découvre que son père Takeshi Kisaragi a été enlevé par le gang Panther Claw car celui-ci avait découvert un dispositif pouvant permettre la transformation du corps humain. Le soir même, Honey Kisaragi rencontre un homme aux longs cheveux blancs qui lui donne le dit dispositif. Elle devient ainsi Cutie Honey et combat Panther Claw pour sauver son père. Mais une nouvelle étudiante transférée, Seira Hazuki, ne lui facilitera pas la tâche...