在明尼蘇達(dá)州北部的“邊界水域”中，六個(gè)老朋友之間的周末露營(yíng)之旅在神秘的環(huán)境下死亡后變得悲慘起來(lái)，隨著他們企圖在本集團(tuán)內(nèi)揭露殺手，引發(fā)進(jìn)一步的動(dòng)蕩。

　　A couple on the verge of a nasty divorce attempt to sell their empty love nest and move on with their lives, separately. After a successful open house they are horrified to discover, days later, that a potential buyer didn't leave their home. While Alice is being held captive in the basement, the unannounced house guest moves in upstairs. She senses her capture is being kept a rebellious secret. She knows her way only way out if she can only get out alive.

　　赤松德郎是個(gè)腳踏實(shí)地的小型運(yùn)輸公司老板，一直努力維持公司，然而某天他公司的貨車發(fā)生輪胎飛脫導(dǎo)致年輕母親死亡的事件，在警方和媒體都認(rèn)為他是殺人兇手之時(shí)，赤松查出全國(guó)都出現(xiàn)類似的事故，全部都涉及大型汽車制造商「希望汽車公司」的汽車，于是赤松為了證明自己無(wú)罪討回公道，只身挑戰(zhàn)龐大企業(yè)。