Strong Underdog

Jae Pil used to run a karaoke with his mother. At some point, Jae Pil will receive text threats from an unknown person. Then one day, after a small fight with his brother, he turned violent. After that, he apologetically went back to his younger brother, however, he was unconscious. Then, he got the text threat again.

Gang leaders Gyeong-cheol and Tae-yong hide after an attack, while psychopath In-seong wreaks havoc. Detective Cha Do-pil, seeking revenge, convinces them to join forces. A pastor, a monk, and a detective unite for a chaotic showdown.

A bullied high school student fights his way through a brutal tournament to stand up against his tormentors and reclaim his dignity.