十年之前，一场惨剧永远改变了协和镇。汤姆·汉尼格（詹森·埃寇斯饰），一位经验并不丰富的煤矿工人，无意中引发了一场挖煤隧道事故，导致六名矿工被困，其中五人身亡。惟一的幸存者哈利·瓦登（理查德·约翰·华特兹饰）也陷入了深深的昏迷之中，而在深眠中的哈利一心想着要报复。一年后，他在情人节那天苏醒过来，旋即兽性大发，用一把鹤嘴锄疯狂地虐杀了22人，然后才被围攻，被制服，被就地阵法。

十年过去了，汤姆·汉尼格在情人节这天又回到了协和镇。小镇已经从当年的惨剧中恢复，到处都洋溢着温馨的节日气氛，可汤姆内心仍然无法挥去他曾给这个和谐的小镇带来的阴影。在努力尝试着修补他黯淡过往的时候，汤姆渐渐对他的前女友莎拉（杰米·金饰）又产生了似有若无的情愫，可惜的是莎拉已经嫁给了自己最好的朋友亚克瑟（凯尔·史密斯饰），如今的小镇警长。然而就在今晚，数年的风平浪静之后，某些协和镇的阴暗过去回来了。一名戴着矿工面具，手挥鹤嘴锄的连环杀手再度给小镇带来了腥风血雨，而随着他的脚步越来越近，汤姆、莎拉、亚克瑟都恐惧的意识到，也许这就是哈利·瓦登从地狱归来取走他们性命的时候了

　　影片延续前作剧情，故事从“小丑”亚瑟（华金·菲尼克斯 饰）被捕后展开，他在狱中等待着审判日的到来。然而，就在亚瑟与自己的双重人格缠斗之时，他不仅偶遇真爱，甚至还释放出一直潜藏在内心的旋律。

　　影片讲述了一个哥特故事，被鬼附身的年轻女子艾伦·亨特（莉莉-罗丝·德普 饰）和迷恋她的可怕的吸血鬼伯爵（比尔·斯卡斯加德 饰）之间的痴恋，造成了难以言喻的恐怖。

　　On April 26, 2012, six people entered an Isolated Confined Environment with the mission to simulate a trip to Mars. Their mission was a catastrophic failure.

　　Hayley Udall tries to make ends meet for herself and her 14 year-old daughter while providing alimony for a horrible ex-husband. She wishes her problems with her ex could go away, and upon venting her frustrations one night, finds herself tangled up in a pact with two people (Melanie and Kevin) to "eliminate" each other's problems. It seemed innocent wishful thinking before, but as people end up dead-including Hayley's ex-husband-Hayley is trapped to fulfill the pact or risk taking the fall for murder. She tries to clear her name but the police (led by Detective Marks) is eyeing her for her ex-husband's death as well as others. Then Melanie abducts Hayley's daughter as leverage for Hayley to follow through and kill one last person. With Detective Marks trying to find the truth, Hayley must hurry to save her daughter and find a way to avoid murder.