Fifteen years ago evil creatures from the underworld plagued the Earth with the intent of eliminating mankind. Dubbed the Day of Reckoning by survivors of the hellish holocaust, warriors of mankind again must battle the forces of darkness.
On a romantic getaway to Iceland, a young American couple wake up one morning to discover every person on earth has disappeared. Their struggle to survive and to reconcile the mysterious event lead them to reconsider everything they know about themselves and the world.
故事发生在位于美国佛罗里达州的一座小镇内,一场猛烈的飓风在居民们措手不及的情况下袭击了该小镇。海丽(卡雅·斯考达里奥 Kaya Scodelario 饰)是一名游泳运动员,在训练中,她接到了姐姐打来的电话,姐姐告诉她,她们的父亲戴夫(巴里·佩珀 Barry Pepper 饰)失踪了。
政府命令小镇上所有的居民们都从家中撤离,但是海丽无法弃父亲于不顾,擅自折返来到了父亲的家中,果不其然,在地下室里,海丽找到了身受重伤的父亲,如果不是她即使出现,那么戴夫将必死无疑。现在,父女两人需要面对的,是逐渐被洪水填满的地下室,但很快,海丽就意识到,他们的对手并非这么简单,有一些邪恶而又凶暴的黑影隐藏在水面之下。