Ariel Wolfe, grieving after her sister's suicide, discovers a sinister connection between her sister's death and the infamous psychiatric facility known as the Vannacutt Psychiatric Institute for the Criminally Insane. Unknown to Ariel, her sister had become entangled with the dark secrets and supernatural forces lurking within the abandoned building. Ariel's skepticism turns to horror as she finds a journal belonging to her sister, which reveals a hunt for a mysterious and powerful idol believed to be located within the institute's decrepit walls. Driven by the need to understand her sister's final days, Ariel reluctantly agrees to join a group of treasure seekers aiming to retrieve the idol, oblivious to the true danger that lies ahead.

Upon entering the ominous structure, the group quickly realizes that the horrors of the house are far beyond mere urban legends. The building itself, a maze of terror, is alive with the malevolent spirits of its past inhabitants, including the sadistic Dr. Vannacutt, who once performed grotesque experiments on his patients. As supernatural phenomena escalate, traps are triggered, and the house's gruesome history begins to repeat itself, Ariel and her companions find themselves in a desperate struggle not just for the idol, but for their very survival, against an entity that seems to predict their every move. The quest for treasure becomes a nightmarish fight against supernatural forces, compelling Ariel to confront the secrets of the house and her own family's connection to its haunting past.