为了招待家人共度圣诞，一名建筑师聘请了一位假日协调员进行装饰布置，而前者所收获的远不止节日的美好氛围。

赤身裸体，浑身布满黏液的Kyle（马特·达拉斯 Matt Dallas 饰）从天而降。他不知道自己是谁，对世界一无所知，没有语言能力，甚至不懂得如何进食，但他却似乎具备天生的抵御危险和生存的能力。他的大脑就像一个刚出世的婴儿般，但是却有极强的领悟能力。好心的心理学家Nicole Trager（玛格丽特·马科林苔 Marguerite MacIntyre 饰）收留了他，把他带到她的家里。而Trager一家的其它三位成员Bruce Thomas - Stephen Trager（布鲁斯·托马斯 Bruce Thomas 饰）、Lori Trager（艾普萝·美森 April Matson 饰）和Jean-Luc Bilodeau - Josh Trager（让-卢克·比洛多 Jean-Luc Bilodeau 饰）也开始接受这个神秘的男孩。神奇男孩Kyle的故事从这里开始......

Returning home from a camping trip, four friends pick up a stranded motorist, who surprises them all with blast of knock-out gas. Coming to, the four now find themselves imprisoned in a decrepit house with six other strangers, and all are outfitted with a device attached at the base of the skull. Unsure what they are doing there and who is behind it all, the group is soon enlightened by video that advises them that there is a way out of the house. But the threshold they must cross is one of excruciating pain... The mechanisms they wear are for collection of chemicals naturally produced by the human brain once the vials are filled, the captives are free to go. Unfortunately for them, the only way for the body to secrete the precious fluid is to experience life-threatening pain. Plus, there is a 24-hour window in which to secure their freedom; after that, the doors are locked forever. At first, there is uncertainly, and even a botched attempt to remove the device, but a solution is devised each must submit to a torture session until all have been subjected, and the collected fluid levels rise high enough to ensure their release. In the face of torture, however, not everyone is willing to play by the newly created rules the group is ripped apart by infighting, secret alliances, double-crosses and shattering outbursts of violence. With the clock ticking down the minutes, the one for all mentality devolves...just how far will each go in order to survive?