Sho Fukamachi, a young school boy, discovers a mysterious metal object and with a blinding flash he finds that he has accidentally fused with the Guyver, an alien bio-armor of unlimited power. To save the life of his girlfriend, Mizuky Segawa, Sho must battle the Chronos Corporation and their biomorphic creatures, the Zoanoids. Only the power of the Guyver can stop Chronos plan\'s to rule the world.