Every year, former college roommates Jackie, Abbey and Trina take turns organizing a mystery getaway for the three of them. This year its Jackies turn, and shes chosen a weekend of camping in New Jerseys Deep Barons. Despite ominous warnings from a local shopkeeper, the young women set off into the wilderness with high spirits, and its not long before theyre skinny dipping in the nearby lake and generally making the most of the great outdoors - blissfully unaware that theyre being watched. As the friends settle in for the night, theyre suddenly attacked by a pair of sadistic brothers, Ike and Addley, who drag them in their sleeping bags back to their dilapidated house in the middle of the woods to meet Mother who turns out to be even more sick and twisted than they are. Subjected to violence, torture and assault beyond their worst nightmares, the women are forced to channel their inner savages in a desperate bid to fight back against these backwoods degenerates.