High school students throw a Halloween party in a mansion haunted by a young demon.

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.—Brian J. Wright <[email protected]>

In a Catholic Boarding School, the high-school student Melissa is bullied by her fellow mates that call her Mouse. Melissa is haunted by dreadful nightmares and Sister Gloria treats her with affection. In the Halloween night, the newcomer Father Bob authorizes the students to organize a Halloween Party. But a group of seven students lure Melissa and go to the notorious Hull House that is famed to be haunted. They leave Melissa in the car and separate inside the house to have sex. But Melissa's sister Angela Franklin hunts them in the house and turns the youngsters into demons. But Melissa lives the house and warns Sister Gloria goes to the house with her, the skeptical Father Bob and two other teenager to fight Angela and bring the teenagers back.—Claudio Carvalho, Rio de Janeiro, Brazil