On the Red Bud Indian Reservation in South Dakota, Astrid Bjorklund is trying to stop the horrific epidemic that is ravaging the tribe. The elders are suspicious of her, but when they see some of their people beginning to recover, they allow Astrid to continue caring for the sick and to train others to help. She is overwhelmed by this need so close to home and wonders if this is the mission field God has planned for her. Joshua Landsverk wants to repair his broken relationship with Astrid, but he is opposed to her present work and refuses to tell her why. When he encounters unexpected adversity, a surprising act of kindness brings healing to the grievous wrong inflicted years ago.