Skipper Murphy is serving as trainer and inspiration for his brother Red Murphy training for a world championship title bout. Trouble comes for the Murphys when Red runs up against a gambling syndicate and is put on the spot to throw the fight.
| Actor | Role |
|---|---|
 Frankie Darro'Skipper' Murphy | 'Skipper' Murphy |
 Dick Purcell'Red' Murphy | 'Red' Murphy |
 Judith AllenRuth Lane | Ruth Lane |
 Lillian ElliottKatie Murphy | Katie Murphy |
 Don RowanBill Grogan | Bill Grogan |
| WWilliam RuhlMonk -Club Owner | Monk -Club Owner |
 Lew KellyRegan - Policeman | Regan - Policeman |
 Ralph PetersBlackie - Henchman | Blackie - Henchman |
| MMax MarxBritt - Henchman | Britt - Henchman |
| JJean JoyceMiss Grace - Radford's Nurse | Miss Grace - Radford's Nurse |
| CCliff HowellRadio Commentator | Radio Commentator |
| JJoe LynchHenchman | Henchman |
 Wilbur Mack'Doc' Radford | 'Doc' Radford |