It is Hallowaiian on the Big Island of Hawaii, Therefore mischief and excitement are in the air. Three friends, Eddie, Kai and Leilani discover a mysterious idol in a secret cave whilst catching a waves . They immediately uncover they have unleashed an ancient evil up on the island in the kind of a giant creature. The youngsters find help in some mystical friends and discover this to be able to vanquish the wicked, Kai must discover his heritage, also believe the stories of the ancestors.