The Adventure Begins: Part i Mars is running out of water and soon the Martian Mice will perish. Their only hope is the magnificent Regenerator, a machine capable of converting dirt into any substance required, including water. But the evil Catatonians, led by cat, Supreme Commander Hairball, have launched an all out attack in the hopes of capturing the Regenerator for their own purposes.
The Adventure Begins: Part Ii With the only Regenerator on Mars having been destroyed, things are looking bad. The Biker Mice must take General Stoker, (creator of the Regenerator), to Plant Earth where he can find the necessary tetra-hydrocarbons required to build another of the precious machines. But surprises are in store for the Biker Mice upon their return in the guise of one Ronaldo T. Rump!
It's the Pits The Biker Mice are lured into a secret underground world care¬fully hidden beneath a Rump Mini-mart where they encounter not only one of the nastiest baddies of all time, The Pit Boss, but an unexpected group of enemies. The Plutarkians!