Yoon Dong-ju once stood at the top of the world as an Olympic boxer. But after a scandal ruins his name, he finds himself starting over this time as part of a unique police program. The government forms a special unit made up of former athletes, using their speed, strength, and discipline to fight violent crimes.
Dong-ju joins forces with Ji Han-na, a former sharpshooter with a serious personality and painful past. Together with other ex-athletes, they chase down dangerous criminals while slowly building trust in each other. What begins as a tactical job turns into a deep personal journey of growth, redemption, and second chances.
Main Roles
- Park Bo-gum as Yoon Dong-ju
A former Olympic boxing gold medalist who joins the police after a career-ending scandal. - Kim So-hyun as Ji Han-na
A calm, sharp-shooting ex-athlete with a mysterious past and a cool attitude.
Supporting Roles
- Lee Sang-yi as Kim Jong-hyeon
A fencing silver medalist still nursing feelings for Han-na. - Heo Sung-tae as Ko Man-sik
A heavyweight wrestler turned officer with a strong sense of justice. - Tae Won-seok as Shin Jae-hong
A kind-hearted former discus thrower with solid instincts. - Oh Jung-se as Min Ju-young
A senior detective who trains and leads the team with quiet confidence.
Good Boy isn’t just about catching criminals it’s about finding purpose after failure, building trust with unlikely teammates, and learning how to start again. With powerful performances, action-packed missions, and a strong message of hope, this drama is definitely one to watch in 2025.
