Gee, a writer trapped in a cycle of anxiety, depression, and stalled ambition, joins a clinical trial at Glass Solutions, where an experimental drug called BriteNol promises a way out. When she takes the pill, her body undergoes a violent transformation, expelling a thick, black substance that leaves her feeling lighter than she has in years. For the first time, Gee feels the joy, clarity, and freedom she’s been chasing, but as her sense of self slowly begins to fracture, she is forced to confront the terrifying possibility that the reflection in the mirror isn’t her at all.

Set after an annual purge which was unable to be stopped - meaning crime is legal forever. A lonely survivor comes across an intermediating man who offers to help him survive. The man claims he knows the whereabouts of a forager base and will take him there if he allows him to help. It is up to the survivor to trust him or not.

Office alliances and basic common sense fall to shit when HR mandates a one-night criminal free-for-all.

In an altered United States, several unrelated people discover how far they will go to survive a night during which all crime is legal for 12 hours. A closer look behind the scenes of The Purge TV series.

电影聚焦于导致清除计划发生的原因，讲述了由于人口膨胀，社会问题加剧，一个名为New Founding Fathers of America的组织进行了一种社会学理论测试，即在某一孤立的社区进行为时一晚的发泄、攻击、侵略，促成社区人们之间的相互残杀。这一制度在全美推广，一时间马路街道都成为了杀戮的战场。故事的荒谬性吸引了大量观众，第一年的杀戮日就要降临，恶魔们都已经准备好了。

故事依旧骇人听闻，尽管在未来的年月里。按照未来美国政府的规定，每年的7月18日，是法定的“违法犯罪日”。在这一天里，美国政府的国家机器将休息，允许…

故事开始于1992年的爱沙尼亚，老太太阿丽德（劳拉·布林 Laura Birn 饰）独自生活在自家的农庄里，日子过得非常平静。一天，她的院子里来了一位不速之客——浑身是伤骨瘦嶙峋的女孩萨拉（阿曼达·皮尔克 Amanda Pilke 饰）。 莎拉告诉阿丽德，自己出生于符拉迪沃斯托克，被人贩子拐卖到了西方，沦为妓女，几经挣扎才逃脱了控制者的魔爪，之后又惨遭俄国黑手党帕夏（克里斯特杨·萨夫 Kristjan Sarv 饰）的追杀，实在无处可去才勿入此处。阿丽德非常同情萨拉的悲惨遭遇，于是决定收留她，然而，随着时间的推移，种种迹象表明，莎拉会身在此处，并且巧合。

近未来的美国，全国失业率仅为1%，犯罪率则创下史上最低纪录，暴力几乎消失无踪。美利坚合众国仿佛进入宛如天堂的美好黄金时代，而促成这完美表象的则是前所未闻的大扫荡计划。国家为了有效释放公民心底的压抑和不满情绪，特别规定每年有一天的晚上7点之后举行长达十二小时的全国性大扫荡，届时人们将走上街头，展开完全不用承担法律责任的殴斗与杀戮。在这个畸形的时代，安保系统推销员詹姆斯·桑丁（伊森·霍克 Ethan Hawke 配音）大发其财，与妻子儿女过着养尊处优的幸福生活。 又是一年大扫荡之夜到来，桑丁一家端坐固若金汤的豪华府邸，在屏幕前观赏杀戮之夜的表演。谁知这一晚，詹姆斯的儿子查理出手拯救了一名被追杀的流浪汉，桑丁一家不可避免被卷入血腥的漩涡之中……

政府实施的人口减少计划致使数百万人遭殃。一名暴虐官员为救自己儿子，对一名具有免疫力且隐居的幸存者展开追捕。该幸存者不得不为保卫自己的庇护所和保持理智而奋起战斗。