Larke's parents are going away for the weekend, but have given Larke permission to invite her girlfriend's over for a weekend slumber party. The guys over hear this and decide to crash the party and play pranks to scare the girls. But a much bigger surprise is in store for all of them. There is a power outage, Larke's mysterious new maid may be keeping a deadly secret from the gang, and an unexpected visitor arrives to turn the fun party into a bone chiller.