The Mystery Inc. gang have gone their separate ways and have been apart for two months, until they each receive an invitation to Spooky Island. Not knowing that the others have also been invited, they show up and discover an amusement park that affects young visitors in very strange ways. Fred, Daphne, Velma, Shaggy and Scooby soon realize that they cannot solve this mystery without help from each other.
Based on the 2002 movie, with slight modifications and the James Gunn's original script.
