Karen never planned on being a hero. A recent widow, she has her hands full with work and parenting her son Max. Then Karen saves Jeremy's life during a drug store robbery and quickly discovers that the young man is intent on paying her back at any cost. At first, life starts improving for this good Samaritan, but as Jeremy's efforts become more extreme, Karen starts to wonder if no good deed truly goes unpunished.

A storm is coming. No one could predict it. No one can measure it. Now one family must survive it. You can't come in from the cold.

自2002年加入美国海军陆战队，爱国青年杰克·卡特（Mike 'The Miz' Mizanin 饰）从戎十年，在世界各地饱经磨练。这一天，杰克终于迎来久违的假期，回到阔别已久的故乡布里奇顿，见到了两个妹妹：离婚归家的阿曼达（凯米勒·苏利文 Camille Sullivan 饰）和正处在青春叛逆期的丽丽。最初的喜悦关心过后，难免有些不快悄然滋生。某天，丽丽和曾有过贩毒史的男友达伦外出游玩，结果意外目睹一起杀人事件。杀人方是某不满政府现行政策的暴力激进组织，他们绑架了来不及逃离现场的二人。无法坐视妹妹身处险境，杰克必须尽快展开营救行动……

新年前夜，死亡幽灵般的凶手，利用跨年烟花的掩护，在市中心的一栋大楼，大规模远程射击枪其他高层楼上狂欢的人群，紧接着射出子弹的大楼房间发生爆炸。此神秘案件遇难者人数众多，留下的线索极少。 当地年轻女警艾丽诺的敏锐判断吸引 了负责调查此案的联邦调查局长官兰马克的注意，二人携手接近那冷酷的、危险的、惊人的真相。