由布莱恩·T·杰恩斯执导导演，2013 年在美国 上线开播，是一部科幻片电影，剧中对白语是英语。剧中讲述了A young newlywed couple find themselves trapped in a network of underground caves. With her husband injured, the new bride is forced to find her way back to the surface in order to save his life. In the process, they discover a terrifying truth about the "underneath", they are not alone. Something evil is hunting them.
