"The Bone Choir" follows Arthur Mulvaney, a lonely, retired tenor who abandons a suicide attempt when he discovers a hidden basement choir of forgotten souls—the unclaimed dead of Toledo, whose bones resonate with song. As Arthur becomes their unlikely conductor, he discovers his harmonies keep at bay a deeper, hungering darkness in the foundations. Facing a talent show, a suspicious superintendent, and city developers, Arthur must forge a new, profound harmony that integrates both the dead and the ancient hunger, finding his purpose in a symphony of the lost.