With no other options, Hannah's estranged mother pleads for her help in finding her missing stepdaughter, Emily. Last seen at the secluded Seven Day Saints compound in the desolate Utah border town of Echo Canyon. Reluctant at first, Hannah agrees to take the case and soon discovers that Seven Day Saints are ruled by one man, Kenneth Pratt-a maniacal leader with absolute power over his followers and influence that makes him nearly untouchable by the law. Under his control, the community is plagued by violence, polygamy, forced marriage, and accounts of sexual abuse. With the help of another investigator, a reporter, and a former member who barely escaped with her life, Hannah goes undercover in Echo Canyon, determined to find Emily and expose the dark secrets of Seven Day Saints.