Johnnie Bradfield (John Garfield) is a southpaw world champion boxer falsely accused of murder. He disappears and is presumed dead. The only witnesses who could have exonerated him were his manager and girlfriend, both of whom have died in an automobile accident. Detective Monty Phalen (Claude Rains) believes that Johnnie is still alive and hasn't given up on searching for him. Johnnie, meanwhile, is hiding out on Grandma Rafferty's (May Robson) farm in Arizona. There, he meets up with some juvenile delinquents, Tommy (Billy Halop), Angel (Bobby Jordan), Spit (Leo Gorcey), Dippy (Huntz Hall), T.B. (Gabriel Dell), and Milty (Bernard Punsly), who are under the guardianship of Tommy's sister Peggy (Gloria Dickson).