Humanity's future was forever changed by Dr. Shizuma's revolutionary invention, the Shizuma Drive. It brought about a time of prosperity and advancement unlike any before. But the peace was short-lived as Big Fire, a group determined to rule the world, emerged as a threat. To combat this danger, the International Police Organization assembled a team of superpowered fighters and martial artists. They were accompanied by Daisaku Kusama, the inheritor and master of the formidable robot, Giant Robo. When the IPO seized an aberrant version of the Shizuma Drive, tensions between the two groups escalated. As conflict raged, Daisaku faced his ultimate test, uncovering the truth behind the creation of the Shizuma Drive. The fallout brought their civilization to its knees. Giant Robo is a thrilling adventure set in a retro-futuristic world, drawing inspiration from opera, kung-fu cinema, wuxia tales, and classic mecha anime. While it draws from the works of manga author Mitsuteru Yokoyama, the story was created to forge its own path.