Naoto detective Jiban fights for justice against Bioron and his evil plans to conquer the world.
Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.
Juspion's parents were killed by space pirates when he was a baby. After escaping to the planet Eijin, he is raised by a space hermit. He eventually embarks on a quest to fight the Mega beasts and defeat Satan Gorth. Hetravels from planet to planet until he finally arrives on Earth. Wearing a special suit, he has super human powers and a transforming spaceship.
