On Halloween night, ten teenagers decide to hold a seance at an abandoned funeral parlor called Hull House, which is rumored to be built on cursed land and haunted by malevolent spirits. Stoic Judy, her boyfriend Jay, their friends, and the cynical party hostess Angela explore the decrepit building, unaware of the dark history that clings to the walls of Hull House. Their fun turns into horror as they playfully attempt to summon the dead, not knowing how much truth lies in the local superstition.

As the night progresses, the teenagers' initial skepticism is crushed by a series of eerie occurrences that swiftly escalate into a fight for survival. Unseen forces take hold of the group, transforming the Halloween gathering into a demonic nightmare. The locked doors of Hull House trap the group inside, leaving them desperate to uncover a way to escape the growing evil that has begun to emerge from the shadows, aiming to consume them all.