A group of college students plan one final pre-graduation party at a secluded lake house for an "80s murder mystery" weekend unaware that a crazed, masked killer has decided to join the celebration. Will anyone survive the slaughter - or is this going to become a truly cruel summer?

Heeding the advice of medical professionals, the traumatized survivors of a deadly vacation house massacre try to confront their own personal demons by organizing a stage production of their harrowing experience. But a familiar face is back for revenge - and determined to make sure these unsuspecting actors fade to black before their time.