The true story of May Lemke and her son Leslie. May is a middle-aged nurse and mother of grown children, who, along with her husband, agrees to take in an abandoned baby boy with mental and physical handicaps. Leslie is blind and brain-damaged, but May patiently teaches him how to eat, walk, and talk. Leslie shows an interest in music, but it isn't until he is a teenager that his special ability reveals itself. He sits down at a piano and begins to play a classical piece he heard on TV, amazing everyone.