On the night of Halloween, 10 teens decide to go to a party at an abandoned funeral parlor. "Hull House", rumored to be built on an evil patch of land & underground stream, is the place. While starting the party, the teens gather around a big mirror to perform a seance...BIG MISTAKE. They awaken some evil force and find themselves trapped and taken over one by one. Now it's a battle for who can survive and cross over the stream before going to hell
Angela, the universe's most unpleasant party crasher, returns! Angela's sister, Mouse, is taken by her bullying Catholic school classmates to a party at Angela's favorite haunt, and before long, everybody's being turned into demons and only a butt-kickin' nun, who wields her ruler like a mighty sword of steel, can save the day.
On Halloween night, after their car breaks down, a pair of teenage girls hitch a ride with a group of misfits from their high school. However, on the way an accident leads them to believe they shot a police officer, so they decide to stop at an abandoned mortuary to hide think out a solution, and engage in hedonistic activities. Problem is, the place IS inhabited... by Angela, the demon of the previous installments. Soon everyone is turning against each other as Angela kills them, deceives them, or transforms them into demons.