Astro is a half-robot boy. After his unfortunate death from an accident, Dr. Phoenix reincarnated him by using modern technology to transplant the robot cells into his body. Therefore, he has an eternal love for humanity and considers his own destiny is to end the evils. Sharaku is a man who devised a plot to use Death Mask to conquer the whole world. He kidnapped Duke Red to activate the terminal device and harnessed its power. As the plan goes succeed, a series of devastating robots were born to destroy the lives. Astro is summoned to restore internal peace to the Earth. But it all happened so fast, and he needed a Death Mask to make the device to reverse time.
