The gang goes after the Hidden Treasure of Crystal Cove but are stopped by “The Freak of Crystal Cove”. As the mystery progresses, people are revealed for who they truly are and Professor Pericles returns and steals both pieces of the Planispheric Disk. In the end the mystery is solved; however, the gang tragically falls apart. Fred leaves to go look for his real parents, breaking off his engagement with Daphne, while Shaggy’s parents decide to send him off to military school and then send Scooby to a “nice” farm. All seems lost for Mystery Incorporated, but Scooby, enraged at Professor Pericles, vows to bring the gang back together so that they can continue pursuing him.

All Fear the Freak