The plot of this film centers on Jonathan Graves (Peter Liapis), a college student who uncovers his late father's occult paraphernalia in his family's mansion.
According to stories that Charles Band tells on his Full Moon Horror Road Show, he was tasked to come up with a great campaign to promote the film.
Although Band has claimed that the scene with the Ghoulie popping out of the toilet was shot after the fact to mirror the poster image, Luca Bercovici says that it was part of the original shoot.
[citation needed] In the second installment, the Ghoulies hitch a ride with a carnival and end up hiding in an amusement park funhouse called "Satan's Den" which becomes a smash hit when visitors believe the little demons are part of the attraction – that is, until people start falling victim to the evil creatures.
In the final installment, Jonathan Graves (Peter Liapis) returns, this time a retired-occultist-turned police officer.
His latest assignment finds him battling his former girlfriend Alexandra (Stacie Randall), who has escaped an asylum and tries to summon forth the demonic forces Graves trifled with in the first film.