The Mystery Gang goes to Hawaii for the Big Kahuna of Hanahuna Surfing Contest. However, the gang and the locals find the island invaded by the vengeful Wiki Tiki spirit and his demons.
Cast
Casey Kasem
Shaggy Rogers (voice)
Frank Welker
Scooby-Doo / Fred Jones / Wiki-Tiki / Interviewer (voice)
Mindy Cohn
Velma Dinkley (voice)
Grey DeLisle
Daphne Blake / Auntie Mahina / Local Woman #2 (voice)