In common with all other Halloween episodes of The Simpsons, the program is made up of three self-contained stories; "The Greatest Story Ever Holed", "Un-Normal Activity" and "Bart and Homer's Excellent Adventure". The second segment parodies the 2007 movie Paranormal Activity and its sequels. The title of the third segment references the 1989 time travel comedy movie Bill and Ted's Excellent Adventure but the plot more closely resembles that of the 1985 movie Back to the Future.