The Skysurfers team up with a band of under-world rebels in a high-stakes battle against Cybron, who has joined forces with the invading force below. With the odds stacked against them, the Skysurfer Strike Force must prevent Cybron and the lower world renegades from taking over the world above. But to do it, they must defeat Cybron's bio-borg versions of the Slitha monster worms -- made of metal, equipped with battle gear and over a hundred feet long.