Emmanuelle acquires the third sample, prompting both Chief Chujo and agent Ginrei to prepare for the ultimate sacrifice.
Big Fire's mighty Orb has disappeared, its anti-Shizuma field inactive and Taiso's sacrifice has brought the Experts of Justice some valuable time. Giant Robo, meanwhile, is lost amongst the frozen Himalayan mountains.
Giant Robo lies in ruins after the magnetic attack on Von Folger's Eye failed. Taiso, meanwhile, confronts his old enemy in an attempt to buy his colleagues more time to escape the doomed city before the Eye activates.
Three nights have passed since the terrible device known as Von Folgers' Eye was unleashed on Paris, and now its unstoppable course has taken it across Europe and America. The Experts of Justice launch the mighty airship Greta Garbo, but the forces of Big Fire are not content to stand by and watch their masterpiece defeated.
Dr. Shizuma invented a revolutionary new form of renewable energy drive but had to pay a heavy price for his success in a catastrophic accident that the world wants to forget. 10 years later the secret organization Big Fire have obtained two of three mysterious Shizuma drives as part of their world domination plans. The third drive has however been taken by Dr. Shizuma who during his escape is saved by Giant Robo. A desperate struggle begins between the Giant Robo and Big Fire for the control of the last drive as Big Fire unleashes their ultimate weapon, the Eye of Volger.