Night of the Demons 2

The name of this movie is Night of the Demons 2 released in 1994-05-31 and it's main theme is 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..