Luisa Cantu is a girl from a Sierra Madre mountain village. After being impregnated in a fertility ritual of ancient origin, she leaves Mexico to work in the Rio Grande Valley of Texas as a housemaid for Mrs. Eddie Hatch, a woman with a strong will and a narrow worldview. Their complex relationship-by turns mystical and pragmatic, serious and comic-reveals the many ways human beings can wound one another, the nature of love and sacrifice, and the possibility of forgiveness.