拳击推广人尼克·多纳蒂将一名酒店门童培养成未来的冠军，但当这个"小子"爱上自己的妹妹时，他开始重新考虑这个计划。
Edward G. Robinson
Nick 'Nicky' Donati
Bette Davis
Louise 'Fluff' Phillips
Humphrey Bogart
Turkey Morgan
Wayne Morris
Ward 'Kid Galahad' Guisenberry
Jane Bryan
Marie Donati
Harry Carey
Silver Jackson
William Haade
Chuck McGraw
Soledad Jiménez
Mrs. Donati
Joe Cunningham
Joe Taylor
Ben Welden
Buzz Barett
Joseph Crehan
Brady
Veda Ann Borg
The Red Head
Frank Faylen
Barney
Harland Tucker
Gunman
