这个时候，军装男子发出一声痛呼，但这还没完，陈源抓着他的手腕把他往自己面前一拽，同时一弯腰，把掉在驾驶室里，他脚旁边的匕首拣到手里，在军装男子面色大变，疾呼不要的哀鸣声中，闪电一般插进男子的胸膛。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.
