 Jim Dolan (Dennis Morgan) can t resist a good fight until Ann Stacey (Gloria Dickson) makes him promise to give up fighting to marry her. But when his brother Dan Dolan (Arthur Gardner) is killed by Mart Hendler (Ward Bond), Jim, with the aid of his pal Frankie Donahue (Larry Williams), sneaks out to get Mart, who is hiding out with his girl friend Marie (Sheila Bromley).