Lyle Hovde is at the onset of his golden years, living a mostly content life in rural Wisconsin with his wife, Peg, daughter, Shiloh, and six-year-old grandson, Isaac. After a troubled adolescence and subsequent estrangement from her parents, Shiloh has finally come home. But while Lyle is thrilled to have his whole family reunited, he's also uneasy: in Shiloh's absence, she has become deeply involved with an extremist church, and the devout pastor courting her is convinced Isaac has the spiritual ability to heal the sick.