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.
as Cha Woo-sol
as Jeong Do-hyeon
as Bae Seok-chan
as An Hyun-min
as Lee Won-joon
as Han Seong-yong
as Jeong Sang-hyub
as Min Jong-tae
as Hyeon Woo-yong
as Yoon Ji-hee
