Zoinks! Two years after a clash of egos forced Mystery Inc. To close it's doors, Scooby-Doo and his clever crime-solving cohorts Fred (Freddie Prinze, Jr..), Daphne (Sarah Michelle Gellar), Shaggy (Matthew Lillard) and Velma (Linda CardenelliI) are summoned to investigate. Scooby and the gang will have to forget everything they think they know about fake ghouls and phony creatures to crack the case, save themselves and possibly... The world! Ruh-roh!