The movie is a "rip-off" or parody of several famous horror and pop culture films:

: The film also parodies The Amityville Horror , Hollow Man , Stigmata , and even The Rocky Horror Picture Show .

The plot of is a comedic spoof centered on a supernatural haunted house theme. It follows a group of college students, led by Cindy Campbell, who are lured into a mansion called "Hell House" under the guise of a scientific sleep study conducted by the creepy Professor Oldman. Main Plot Points

: Professor Oldman and his assistant Dwight invite the group to Hell House, promising they are participating in a study to help with insomnia.

: Serves as the primary framework for the haunted house setting and sleep study plot.

: The opening scene famously spoofs the possession of Regan MacNeil.