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.

Cult leader Warren Jeffs rises to power in the polygamist Mormon sect once headed by his late father, but some of his wives fight back to bring him to justice. Based on a true story.