Following up on his 2007 documentary, The Most Hated Family in America, Louis Theroux returns to Topeka, Kansas, for a week-long visit with the Westboro Baptist Church. He again joins the Phelps family on their controversial pickets where they try to antagonise communities with offensive slogans and anti-gay placards. But four years on from Louis's last visit, there are signs of disarray in the Phelps clan. A series of defections of family members has shaken up the church.

Louis meets the Phelps family — the people at the heart of the controversial Westboro Baptist Church. The Phelps have rabid anti-homosexual beliefs, and often campaign at the funerals of American soldiers. They believe that every tragedy in the world is God's punishment for homosexuality.