After being created and subsequently deactivated by the emotionally unhinged Dr. Tenma, robot boy Astro comes under the care of the kindly Dr. O'Shay, who schools the youthful android in the ways of robots and humans alike. Possessing superior strength, speed and intelligence, young Astro sets out to free the world of injustice, battling legions of evildoers -- including his own brother -- in this remake of the classic 1960s animated series.