A boy who never knew how to fight back.
A bullied teenager who is locked up at a juvenile detention center due to an unexpected accident, meets a mixed martial arts champion to break through his own limits.
Kim Min-seok
Cha Woo-sol
Wi Ha-jun
Jeong Do-hyeon
Jung Won-chang
Bae Seok-chan
Lee Jae-kyoon
An Hyun-min
Bae Myeong-jin
Lee Won-joon
Lee Jung-hyun
Han Seong-yong
Cha Yeob
Jeong Sang-hyub
Shin Min-jae
Min Jong-tae
Lee Hyun-wook
Hyeon Woo-yong
Lee Eun-jae
Yoon Ji-hee
