A powerful suit transforms Jim from an ordinary earthworm into a lanky action hero, sending him after the villainous Queen and Princess What's Her Name. The adventure treats its premise as permission for constant surprise.

Jim fires a blaster, uses his own body as a whip, and navigates stages whose hazards often behave like elaborate visual jokes. The familiar running and jumping are interrupted by races, escorts, and other unusual set pieces. Success depends on learning each scene's particular rules as much as mastering movement. Its expressive animation makes the slapstick memorable even when a gag is also an obstacle.