When a group of hikers take off for a weekend of fun and adventure in remote mountain region, they unwittingly stumble across the Staunton family - for whom the hill is named - and find themselves at the mercy of a depraved, diabolical brood that will stop at nothing to rid their property of these "trespassers." The only law on Staunton's Hill is the law of the Stauntons...and, in this case, the penalty for defying that law is death.

In the late 1800s, a fanatical religious leader, a renegade Sheriff, and a former prostitute collide in a blood triangle on the rugged plains of the New Mexico Territory.

女儿的死让洛伊斯（梅丽莎·里奥 Melissa Leo 饰）的精神受到了极大的打击，作为一名母亲，她无法原谅自己的疏忽和失职。面对妻子的崩溃，道格（詹姆斯·甘多菲尼 James Gandolfini 饰）感到十分痛苦却又无能为力，他只能终日徘徊于酒吧与欢场之间，试图暂时忘却现实的残酷。在一家脱衣舞店里，道格遇见了16岁的舞女马洛莉（克里斯汀·斯图尔特 Kristen Stewart 饰），在短暂接触后，他们进行了一笔交易——道格将以每天100美元的价格住进马洛莉的家里，成为她的房客。
当丈夫从生活里彻底消失的时候，洛伊斯才感到了危机，十年没有离开过家的她决定出门寻找道格，而当洛伊斯找到道格时，最让她震惊的并非丈夫正在和马洛莉同居，而是马洛莉和他们的女儿异常相似。鬼使神差之下，洛伊斯也住进了马洛莉的家里，一个奇怪的三人家庭诞生了。