Wtf! (2017)

Three years ago, twenty-two year old "girl-next door" Rachel barely survived a brutal massacre that left all of her friends murdered. Time has passed, and Rachel has moved on, but unfortunately her close friends are spending Spring Break in a secluded house in the woods, and they have cordially invited her to join. She would never have accepted the invitation if she realized that another bloodbath would be showing up as plus one. Once Rachel and her friends arrive at the cabin, the partying, sex, and...terror begins.