In the movie some girl got invited to a popular party or something like that, but then in the later part of the movie the dad like breaks out of jail or something and comes and kills a bunch of kids at said party. if it helps, one of the kills was when a girl was exiting the bathroom on roller blades and he comes out and chops her head off with an axe. Oh and it ends with the girl escaping some cage in the basement but doesn’t help the popular girl out and she gets her throat slit