Jim was just an ordinary earthworm who did regular earthworm-like things such as flee from crows and eat dirt. One day, during a grand space battle overhead, a super suit drops to Earth and lands around Jim - and transforms him into a large and intelligent (at least by earthworm standards) superhero! Then, when Jim learns of the evil plans of Psy-Crow and Queen Slug-for-a-Butt, he jumps into action and resolves to rescue the beautiful Princess What's-Her-Name!
Play as Jim in this zany, madcap SEGA MEGA DRIVE adventure! Run, gun, swing on hooks by your (worm) head and launch cows at the quirky villains you meet along the way, such as Major Mucus, Chuck and Fifi, Evil the Cat and Bob the Killer Goldfish. Groovy!