The movie is set in the isolated mountains of Appalachia, where the devout followers of Lemuel's church believe that handling venomous snakes is a test of their faith and a way to prove their purity before God. Lemuel is seen as the charismatic leader of the church, and his followers believe that he has direct communion with God.
Mara, Lemuel's daughter, is engaged to be married to a devoted follower named Garret. However, Mara is hiding a secret: she had a relationship with Augie, a nonbeliever, before he left the community. Mara is torn between her loyalty to her father and the church and her love for Augie.
As the wedding approaches, the situation becomes more complicated. Augie returns to the community, and Hope, the steely matriarch of the church, becomes suspicious of Mara's behavior. Hope is determined to maintain the purity of the church and will go to great lengths to prevent any perceived sins from tearing the community apart.
Them That Follow is a tension-filled drama that explores themes of faith, family, and tradition. The performances by the cast, which includes Olivia Colman, Kaitlyn Dever, and Alice Englert, are powerful and moving. The movie shows how people's beliefs can both inspire and divide them, and how loyalty and love can sometimes be at odds.