Young Claude Leclerc travels to Paris to begin his training for the priesthood, but he is not sure what he believes about God. One day he learns the words to an old hymn and is drawn to the lines about “David’s Royal Fountain” that will “purge every sin away.” Claude yearns to find this fountain, and at last dares to ask the famous Dr. Lefevre where he can find it. His question leads Dr. Lefevre to set aside his study of the saints and study the Scriptures in earnest. As Dr. Lefevre grasps the wonderful truth of salvation by grace, he wants to share it with Claude, but Claude has mysteriously disappeared. Where is he? And will France receive the good news of the gospel of Jesus Christ?