The twin border towns of Colorado City, Arizona and Hildale, Utah, are home to the Fundamentalist Church of Jesus Christ of Latter-Day Saints, a polygamous offshoot of Mormonism led by Warren Jeffs. Filmmaker Laurie Allen, who grew up inside a polygamist family before leaving, and director Dot Reidelbach send hidden cameras into a community that does not talk to outsiders, especially ones carrying film equipment. The interviews they secure are the film's spine: Elaine Jeffs, Warren's own sister, Carolyn Jessop, author of the memoir "Escape," journalist Jon Krakauer, and Ed Smart, alongside attorneys general from both states who describe the legal limits of prosecuting a closed religious community. Together they lay out a pattern of arranged marriages between adult men and underage girls, welfare fraud, and children pulled out of school, all conducted under Jeffs's authority as self-declared prophet. The film also presses on why mainstream Mormon leadership and state government stayed silent for so long while these practices continued in plain sight.