Part 1:
A group of teens plan a Halloween party at an abandoned funeral parlor in this well-crafted horror film. The home is rumored to be haunted after the owner slaughtered his family and killed himself years before. The teens plan on scaring their classmates, unaware that demons from hell are released for a night of terror for bad behavior. One by one, the teens fall victim to the evil that dwells within the parlor. The audience is left guessing who, if anyone, will be alive the following morning.

Part 2:
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.

Part 3:
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.