After moving to an FLDS community, a cult expert and her husband grow suspicious about a man named Sam Bateman. They decide to secretly investigate him.

As Christine and Tolga gather evidence, they beg local police to act. While Sam manipulates his followers to gain control, one woman realizes the truth.

A witness opens up to Christine about Sam's horrific crimes. After an alarming traffic stop in Flagstaff, the FBI prepares to take down the Samuelites.

A dramatic raid puts Sam behind bars, where he orchestrates a brazen kidnapping. With Christine's support, his ex-followers begin to rebuild their lives.