It is Hallowaiian on the Big Island of Hawaii, so excitement and mischief are in the air. Three young friends, Kai, Eddie and Leilani uncover a mysterious idol in a secret cave whilst catching some waves at sunset. They quickly uncover that they've unleashed an ancient evil upon the island in the form of a giant pineapple-headed monster. The kids find help in some mystical friends and discover that in order to vanquish the evil, Kai must uncover his heritage, and believe the ancient stories of his ancestors.

Following the murder of her family at the hands of her father in the wake of World War I, a young woman is sent to live in a convent. However, the demons that plagued her father follow, reawakening the nightmares of her past.