Cagney is Danny Kenny, a truck driver who enters "the fight game" and Sheridan his former girlfriend, Peggy. While Danny is realizing success in the ring, he is blinded by acid on the boxing gloves of his opponent during a fight. When Danny attempts to get even with the gangster who was reponsible for for his blindness he is wounded. His former manager finances a newsstand for the now blind and handicapped Danny who uses his income to pay for his bother Eddie's music education. The movie ends some time later as Peggy meets/recognizes Danny at his newstand and they both listen to Eddie's first symphony on the radio. The movie is based on a novel of the same name.