Cha Woo Sol, a victim of school violence who was imprisoned in a boys' prison due to an unexpected incident, meets mixed martial arts champion Jeong Do Hyeon and breaks his limit one by one ... Read allCha Woo Sol, a victim of school violence who was imprisoned in a boys' prison due to an unexpected incident, meets mixed martial arts champion Jeong Do Hyeon and breaks his limit one by one in order to seek for revenge and make his bully pay.Cha Woo Sol, a victim of school violence who was imprisoned in a boys' prison due to an unexpected incident, meets mixed martial arts champion Jeong Do Hyeon and breaks his limit one by one in order to seek for revenge and make his bully pay.