The gang is forced to forfeit their place in the Mystery Solvers Club State Finals due to Scooby’s illness. However, Scooby suddenly makes a recovery, and the gang attends the convention. All the human mystery solvers are taken hostage by Lord Infernicus, while Scooby, Jabberjaw, Speed Buggy, Captain Caveman and J. Wellington “Mudsy” Muddlemore try and stop him. They discover that Infernicus has turned the humans into hamsters, then discover he’s trying to take them out of Crystal Cove via train. Scooby and friends rescue their humans, and reveal Infernicus to be The Funky Phantom, who is angry that he’s just seen as a side kick. Scooby then wakes up, revealing the entire mystery was a fever-induced dream, and the gang tells Scooby he’s much more than a sidekick.
