Jonas Nightengale can be actually a deceitful Christian faith healer who creates a living traveling around America holding revival meetings and conducting'wonders' with the assistance of director and their friend, Jane, and their entourage. One of these trucks breaks down in Rustwater, a town in dire need of rain to save their plants. Jonas decides to keep a revival meeting while awaiting for spare components. Will Braverman, the local sheriff, is skeptical and attempts to forbid his town and its people from getting conned. Nevertheless Boyd, a community disabled boy, believes Jonas can create him walk . Events in Rustwater create Jonas doubts and examine their faith.