After Tina Tanaka embarks on investigating the mystery of a masked killer responsible for the deaths of children in her small town, she becomes plagued by demonic forces. Her commitment to solving the case triggers terrifying supernatural occurrences in her life, haunting her both day and night. Seeking assistance, Tina consults a local priest who provides insight into her predicament and aids her in harnessing the spirits to assist her quest. She comes to understand that she must confront these chilling horrors if she hopes to uncover the identity of the masked murderer, even if it means confronting him directly.