The Marshalls are masters at keeping up appearances. Rick, the sheriff of their small town, is a closet alcoholic and has a rocky relationship with his wife, Candice, and their teenage daughter, Amy. Tides begin to turn for the better when Candice discovers she is pregnant for the second time. Amy is waiting for the results of her college application, supported by her friends. Things seem to be heading in the right direction until a broken water pipe puts a damper on their day. Rick is busy and can't be bothered, so after many frustrated calls Candice finds a plumber who can make the repairs. Once this plumber arrives, it becomes clear that the Marshalls aren't the only ones who are not what they seem. They become captives in their own home, subject to a sociopath serial killer bent on creating the perfect family. Once his mind is set on you, there is no turning back!