After the boxing champion retires, the head of a powerful gym, Minegishi (So Yamamura), recommends Yamanaka (Hiroshi Kawaguchi), who is no longer in top form and is ranked number one, for a title fight, but his comrade Hata (Kojiro Hongo) is not happy with this choice, and so he moves to the gym run by the criminal businessman Goda (Toru Abe) and burning desire to beat Yamanaka.
| Actor | Role |
|---|---|
 Hiroshi KawaguchiMuneo Yamanaka | Muneo Yamanaka |
 Ayako WakaoShizuko Abe | Shizuko Abe |
 Kōjirō HongōTetsutaro Hata | Tetsutaro Hata |
 So YamamuraKimpei Minegishi | Kimpei Minegishi |
 Hitomi NozoeYoko, Muneo's sister | Yoko, Muneo's sister |
 Tōru AbeKenzo Goda | Kenzo Goda |
 Michiyo AratamaSayoko Takamatsu | Sayoko Takamatsu |
 Eiji FunakoshiRyusuke Suma | Ryusuke Suma |
 Bontarō MiakeKondo | Kondo |
 Kumeko UrabeSato | Sato |
 Mantarō UshioKeisuke Takami | Keisuke Takami |