Faith, in the Berlin lecture halls of the 1930s, had become an intellectual exercise. For young theologian Dietrich Bonhoeffer, God was a subject to be studied — until a fellowship year in New York introduced him to something far more disruptive: a faith that sweated and sang and bled. Under the preaching of Rev. Adam Clayton Powell Sr. at Harlem's Abyssinian Baptist Church, Bonhoeffer watches a congregation live out Christianity with their whole bodies, and he returns to Germany a different man. What meets him there is a church in freefall — one that has renamed Jesus "Aryan," rewritten the commandments to honor a Führer, and abandoned its Jewish neighbors to state-sponsored terror. Partnering with pastors like Martin Niemöller, Bonhoeffer helps establish the Confessing Church, trains clandestine seminary students, and eventually crosses a moral threshold he never imagined he would reach: conspiring with a resistance cell to assassinate Adolf Hitler. Told largely in flashback from his prison cell at Tegel, the film frames Bonhoeffer's entire arc as a question — not of whether a good man can do a hard thing, but of whether a faithful one can afford not to.