嗨！我姐来接我了，你还没等到你弟弟的回信吧？我那台光脑就送给你了，拜拜！谢谢你这几天的食物和水啊。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.
