After learning that an illegal adoption agreement made between himself and a woman was a fraud, a man takes the woman's baby and the babysitter hostage at her home. When he makes contact with a radio personality, Matt and Emily are forced to negotiate live on the air.

As Darah, daughter of polygamous cult leader Warren Keegan, attempts to escape from her father and reunite with her sister, she is abducted by Warren and his three wives. Warren Keegan is wanted by the FBI after he assaulted a federal officer. By tracking the satellite dish Warren installed on his recreational vehicle, Matt and Emily are able to locate the hostage and her hostage takers. They find out from Darah's sister, who was Warren's wife before she escaped, that Warren believes that he could be saved from the apocalypse if he had four wives. However, Warren's actual reasons behind his marriages are unknown to Matt and Emily, and Warren's wives.