Gang-cheol is a legendary street fighter in Busan who cleaned up his act to care for his sick mother. Knowing he's desperate for money for his mother's operation, Sang-gon proposes that Gang-cheol works for him.
| Actor | Role |
|---|---|
 Yoo Ah-inGang-cheol | Gang-cheol |
 Kim Hae-sookSoon-i | Soon-i |
 Kim Jung-taeSang-gon | Sang-gon |
 Kim Seung-ohHwi-gon | Hwi-gon |
 Jung Yu-miSoo-ji | Soo-ji |
 Lee Si-eonJong-soo | Jong-soo |
 Shin Jung-keunYagami | Yagami |
 Kim In-wooAkito | Akito |
 Kim Hyun-sookOrgan Broker | Organ Broker |
 Jang Tae-seongLee Byeong-hee | Lee Byeong-hee |
 Bae Seul-kiJae-sook | Jae-sook |
 Kim Seo-kyungChyoo Ri-ning | Chyoo Ri-ning |
 Song Young-changHwan-gyoo | Hwan-gyoo |
| Kim Hyun-sookBroker | Broker |
 Ko In-beomPolice substation captain | Police substation captain |
 Kim Ga-youngBus passenger | Bus passenger |
 Shin Yoo-ramIrabu | Irabu |
 Lee Jeong-heonDirector of the internal department | Director of the internal department |
 Seo Dong-seokConventional Market Man 1 | Conventional Market Man 1 |
 Park Min sooNot listed | Not listed |
 Park Kyu-sunNot listed | Not listed |
| KKim Byeong-seoPolo | Polo |