A portrait of Billy Graham, the self-assured and charismatic preacher who became one of the most important figures of 20th Century Christianity, against the backdrop of his relationship with Charles Templeton, another gifted young preacher who's faith could not withstand the onslaught of scientific skepticism. Billy's struggle with the ideas represented in Templeton's eventual unbelief, and his own faith, went on to change the face of modern evangelism.