While hiking in an isolated forest, survivalist Danny Coile (Les Stroud) and old Army buddy Arron James (Stacy Brown Jr.) become hopelessly trapped when they fall into a deep dark cenote with steep walls and no way out. Over the next 85 five days, they transform from mild-mannered old friends into vicious, bloodthirsty animals willing to do whatever it takes to survive. 　　译文(2): 当生存主义者 Danny Coile (Les Stroud 饰)和他的老战友 Arron James (Stacy Brown Jr 饰)在一个与世隔绝的森林里徒步旅行时，他们掉进了一个深深的、黑暗的、墙壁陡峭的、没有出路的煤窑里，陷入了绝望的困境。在接下来的85天里，他们从温文尔雅的老朋友变成了凶残嗜血的动物，为了生存不惜一切代价。