Cindy and her husband, Mike, take their rebellious teenage daughter Kinsey and son Luke on a road trip. But what begins as an ordinary, gripe-filled family excursion soon becomes their worst nightmare come to life. Upon their arrival at a secluded mobile home park, a knock on their trailer door leads to an inescapable night of terror as three masked strangers, with inexplicable deadly intentions, force this fractured family to come together and fight for their lives.