The fierce battle from Episode I was only an overture...
What was Dr. Eggman searching for in the Lost Labyrinth?
What was Mad Gear built for?
They were all a mere puzzle piece of a grandiose project schemed by Dr. Eggman.
As Little Planet, where "Sonic CD" took place, approaches Sonic's world once again, Dr. Eggman's whole scheme will be revealed!