Artemis Cassandra Scerbo plans a party without permission at her parent’s lake house, which is normally vacant for the winter A killer is trying to compose a symphony made up of the screams of his victims At the very same time, Artemis is planning a party at her parents’ vacant lake house, which is right next door to the RV that a killing machine named Caleb Michael X Sommers is using br 　　Her friends Shira Georgia Leva , Delan Zachary Roozen, Romeo and Juliet Killers , Theo Brandon Santana , Ellen Erica Shaffer , Alex India McGee all come out to visit, take cocaine and watch Night of the Living Dead on an iPhone while Caleb haunts the halls with his murderous and melodious hammer…