The song is the story.
In the midst of the Great Depression, Susannah Mullally travels the country, recording lost traditional songs for the Library of Congress. Hoping to find the one song that will bring her long-awaited recognition, she discovers Pearl Johnson in a Texas prison. With a soulful voice and a wealth of African-American spiritual songs, Pearl seeks information and a chance at freedom. Now each woman must decide how much of herself she is willing to give to get what she wants in return.