The movie follows the original tale in a somewhat loose fashion, but manages to retain the majority of the images and action. A seminary student must survive three nights in prayer guarding the deceased witch maiden while she, along with an army of hellish demons, try to lure him out of his Holy Ring of Chalk.
Ethan is a young, shy and rather reserved designer who has suffered from insomnia for many years due to his terrible nightmares. Believing he has a personality disorder he decides to see a therapist to solve his problem, but it will be thanks to the help of his best friend and a medium that he will face a long journey, a journey that will lead him to discover that his nightmares hide a shocking truth, something darker and more sinister than he ever imagined.