One day, a huge ball of fire appears in the space and blasts the communications satellite of Unicorn Organization. To investigate the course of the accident, Azuma sends Giant Robo to space. When the robot tries to catch the ball, it explodes and Glober, a huge magic globe, appears. It emits strange rays at the robot, making it stop spouting the jet stream. Then it catches Giant Robo with its long three legs. They fall down to earth and fall into sea. Daisaku and Minani leave by helicopter to search for the robot. When it is flying on a small island near Izu Peninsula, Daisaku's locator reacts to the transmitter he has set in the robot. Red Cobra and his men who have occupied the island shoot missiles at the helicopter. It explodes and disappears.