Ali Reynolds's longtime friend and Taser-carrying nun, Sister Anselm, rushes to the bedside of a young pregnant woman hospitalized for severe injuries after she was hit by a car on a deserted Arizona highway. The girl had been running away from The Family, a polygamous cult with no patience for those who try to leave its ranks. Meanwhile, married life agrees with Ali. But any hopes that she and her husband, B. Simpson, will finally slow down and relax now that they've tied the knot are dashed when Ali's new daughter-in-law approaches her, desperate for help. The girl's grandmother, Betsy, is in danger: she's been receiving anonymous threats, and someone even broke into her home and turned on the gas burners in the middle of the night.