Dinosaurs come to life at a 3D movie house and wreak havoc on a nearby science museum. The gang must use their investigative skills to save the day.

The gang visits an amusement park that is haunted by the Roller Ghoster, a speed-happy spectre that frightens customers away from the fast rides.

The gang visits Shaggy's friend Jimmy Proudwolf (and his dog Shooby) and soon discover a gigantic bird terrorizing the New Mexico skies.