Draper, Utah: Now that all five of her sons have left home, Mormon bishop's wife Linda Wallheim has quite a bit of time on her hands. She has befriended Gwen Ferris, a woman in her ward who is quickly losing faith in the church. Gwen has a calling in Draper's local "Spanish ward," which is made up of both legal and undocumented immigrants who Gwen feels don't always get the support they need from their bishop.

When Gabriela Gonzalez, an undocumented mother of three, is found strangled at a gas station, Gwen decides the police aren't doing enough and decides to track down the killer herself. Fearing for her young friend's safety, Linda reluctantly joins her, but what they find during their vigilante investigation may put them both in danger.