The gang receives a message from "Mama" Cass Elliot, who's bought a candy factory that's become haunted by "Green Globs".
This episode contains examples of:
- Acrofatic: Cass Elliot can run just as fast as the gang.
- Edible Ammunition: The gang is investigating a haunted candy factory when the Green Globs lock Scooby, Shaggy, and the factory's owner, Cass Elliot, in a storeroom. Fortunately, Cass finds a mechanical jawbreaker dispenser, and fixes it to shoot jawbreakers at the door until they batter it down.
- "Help! Help! Trapped in Title Factory!": Used seriously — Cass Elliot, locked in a room in the Sugar Plum candy factory, throws a "candy bar" (actually something hard with a note) out the window. When the Scooby gang sees that she's being held captive there, they come to the rescue.
- "Scooby-Doo" Hoax: The "Green Globs" turn out to be using the candy in the factory to hide and smuggle gold, and use their monster disguises to scare any would-be investigators away.
- Screw This, I'm Outta Here: The gang and Cass Elliot find the factory foreman locked in a closet by the monsters, and he quits and leaves as soon as they let him out. Subverted since he was one of the culprits though.
- You Are Fat: The episode is rife with jokes at the expense of Elliot's weight.
