[2] This film served as Joseph Barbera's first solo animated production effort without longtime partner William Hanna, who died in 2001, and is one of two direct-to-video films to reunite the 1969–73 voice cast for the human Mystery Inc. members consisting of Frank Welker, Casey Kasem, Nicole Jaffe, and Heather North.

Meanwhile, Shaggy Rogers and his dog Scooby-Doo stay by the food stands, but are attacked by Wildwind, who later kidnap the Bad Omens and Hex Girls.

Chasing Wildwind into nearby caves, Shaggy and Scooby stay outside while Fred, Daphne, and Velma venture inside.

In retaliation, they modified their costumes to better resemble vampires, created a hologram of the Yowie Yahoo, sent most of their kidnapped competitors on free Great Barrier Reef scuba diving tours, and left the Hex Girls for dead in the outback when they refused.

Having rescued the Hex Girls, Malcolm returns them safely while Wildwind is arrested and Daniel names Mystery Inc. the contest's winners by default.