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.

Megabeast Investigator Juspion тривав 1 сезон. Нових епізодів не заплановано.