Five children are kidnapped by space hunters to serve as guinea pigs for mutant experiments under orders from Blackheart, the leader of the "Devil's Hand". But they are saved by the people of Planet Prism and,for 20 years,they were raised and trained among them. until the day when these children had grown up,they set off back to planet Earth with the intention of destroying the Devil's Hand and preventing them from enslaving the entire planet.
