The freedom fighters of the Heaven Federation have recovered the Death Scale's gem scales. Now they have a new enemy, Brain Tentacles and his mutant-mixed aliens. They are in alliance with the Sharp Empire. The aliens want to conquer the galaxy by using the galactic ghost gem. Artidector has revived Nala Boomer and a new recruited, revived crocodile hunter, Steve Irwin, to join the others in battle with the empire.