Ninety nine percent of the worlds has been destroyed by a bio-chemical war. Technology is obsolete and the soil has been polluted leaving people with barely any food. The survivors try to continue on by hunting and consuming the living dead which has dire results as the dead flesh begins to mutate with the bio-chemical still in the atmosphere. People's digestive systems begin to evolve and force their way out of victims mouths to search for food on their own. Mutations spiral out of control into a grotesque finale.

故事主角叫作大卫·盖茨，他被雇来拍摄一项调查。在一个神秘的小镇，所有的居民都消失得无影无踪。在调查中，大卫逐渐发现很多奇异的事情，并且陷入危险。他感到自己体内出现了异样的感觉。与此同时，他的老板让他拍摄一场他并不熟悉的驱魔仪式。在这过程中，他遭遇了一些不自然的状况，被纯粹的邪恶侵袭，而且许多非人的力量在他身体内部将他撕裂的恐惧时刻伴随着他，永远无法消除。