Animation and released on February 8, 2005, by Warner Bros. Family Entertainment, though it featured a copyright logo for Hanna-Barbera Cartoons at the end.

Mystery Inc. receive a free trip to Hawaii from a surf-and-beachwear company called "Goha Aloha", who wants Daphne Blake to design new swimwear for them.

The former is especially upset over this because he claims that the ancient Wiki-Tiki spirit sent demons to attack his village and kidnap his girlfriend Snookie in retaliation for the mayor's actions and because local real estate agent Ruben Laluna built a residential complex on sacred ground.

With Shaggy Rogers and Scooby-Doo's help, she eventually defeats it, allowing the others to unmask it as Manu, who they reveal worked with Snookie to scare off locals and tourists so they can buy their homes and sell them back at higher prices.

As the criminals are arrested, Scooby is named the new Big Kahuna of Hanahuna for his work in stopping Manu before the gang celebrate at a luau.