Two years after solving their last case and going their separate ways, the crew reunite to investigate the strange goings-on at an amusement park called Spooky Island. The attraction appears to lure its young visitors in very strange ways, and it is up to Scooby, Shaggy and the gang to get to the bottom of the mystery.
The crime-busting gang investigate the spooky goings-on brought about by an evil genius intent on wreaking havoc in the town of Coolsville. In addition to the monsters, the gang must deal with a journalist who is out to discredit them.