ON VACATION IN AUSTRALIA, SCOOBY AND THE GANG ATTEND A MUSICCONTEST HELD AT VAMPIRE ROCK---WHERE THE LEGENDARY YOWIE YAHOOVAMPIRE IS KIDNAPPING THE MUSICAL ACTS, INCLUDING THE HEX GIRLS.MASQUERADING AS HEAVY-METAL BAND THOSE MEDDLING KIDS, SCOOBY &THE OTHERS MUST DISCOVER THE IDENTITY OF THE VAMPIRES MINIONS.