The resulting explosion and shock wave of Getter Rays wipes out 99% of the human population worldwide. Thirteen years after this catastrophe, as humanity clings desperately to life, the re-emerged extraterrestrial invaders threaten planet Earth once more. The only safeguard against this alien threat is a giant robot that emerges from the wreckage of the nuclear blast—Shin Getter Robo—piloted by an artificially created human named Gō. With the help of Hayato's Super Robot Army and Gō's co-pilots Kei and Gai, Shin Getter fights to keep humanity's dreams alive.