Cha Woo-sol (Kim Min-seok), a shy and bookish teenager, is a victim of school violence at the hands of Bae Seok-chan (Jung Won-chang). When Woo-sol finally retaliates and disfigures his long-time bully, he is sent to a reformatory. But just like in school, he cannot escape the sordid violence there. Jeong Do-hyeon (Wi Ha-joon) is a former martial arts champion who is serving out his sentence for avenging the murder of his family. In order to survive prison and whenever he meets Seok-chan again, Woo-sol seeks out Do-hyeon to teach him how to fight.
This film is a directorial debut for Chae Yeo-joon and premiered in 2021 via TVING. It is based on the Kakao webtoon “Shark” by Woon and illustrated by Kim Woo-seob.
