The Getter Robos were created to defend the planet from all that would threaten it. But the massive robot weapons were so powerful; those they protected began to fear them. A fear so great it drove humanity to destroy its saviors and their creator. But now a shadow has crept across the moon. The faint echoes of evil laughter can be heard. Terrified whispers tell of the Invaders. Mankind now cowers under the watchful eye of an extraterrestrial menace beyond their nightmares. Their only defenses are the Getter Robos, and the only man who can bring them back lies rotting in the Earth. Or does he?