Synopsis:

Shannon’s annual end-of-summer pool party at her parents’ isolated Lake House is always a hot ticket for the in-crowd. With her parents away, rowdy teenagers get wild, loud, and lewd. They don’t think anyone can hear their fun, but the party attracts an unseen and uninvited guest: Ron, a sadistic escaped mental patient.

Seven years earlier Ron went over the edge when he caught his girlfriend having sees at a party with his best friend. He killed them both. His violent psychopathic rages worsened over the years until any feeling Ron might have had died and were replaced by a murderous black hole. The sight of the promiscuous bikini-clad teenagers is all it takes to set him off.

One by one the teens start to disappear as Ron massacres them in unspeakable ways. Who will survive to see the light of day?