Space pirates use a disappearo device to render their ship invisible. After they wreak havoc, Dodgers and Cadet must disguise as pirates to claim the disappearo device for Earth before the Martian Commander claims it for Mars.

Dodgers drags Cadet along to Robo-World, a space vacation fantasy theme park, where Nasty Canasta, an intergalactic bounty hunter, creates trouble for Dodgers and the Cadet.