Tokyo is attacked by a cyber terrorist. A giant robot called Black Ox spreads destruction throughout the city. The leader of the terrorist group, calling himself Zero, has an ambition -- he seeks to bring his Utopian vision to fruition by using a bio-computer that he developed. Meanwhile, Shotaro learns from the old man Ayabe that his father had left him a robot called Tetsujin 28-Go. Shotaro is at first bewildered by the prospect of operating the giant remote-controlled robot, but is convinced by Ayabe and by his father's last wishes to use Tetsujin 28-Go to stop Black Ox. When was the last time YOU stood strong and tall?