Dongseok wins the National Boxing Championship, but he is not recognized by people due to accusations of match-fixing for the sake of his father, Soonil, who is also the director of Cheongmugwan. He then runs out of the gym and lives a life like a third-rate thug. One day, he hears the news of his father's death, and he prepares for the most reckless match to protect the Cheongmugwan signboard, his father's last legacy!