Officer Black Belt is a South Korean action comedy film directed and written by Jason Kim, and starring Kim Woo-bin and Kim Sung-kyun. The film tells the story of a contract martial arts officer under the Ministry of Justice who closely manages parolee subject to electronic ankle bracelets, assists probation officers in their work, and suppresses verbal and physical abuse and violence that occurs in emergencies with martial arts. It was released on Netflix on September 13, 2024.

Plot

Lee Jung-do is a black belt in taekwondo, kendo, and judo who spends his days playing video games with his nerdy friends when not working as a delivery rider for his father's fried chicken restaurant. After one such delivery, Jung-do helps supervisor probation officer Cho Min-jo in subduing a violent parolee who was caught violating his probation. After receiving a commendation for his help, probation department manager Kim Sun-min persuades Jung-do to join up as a "martial arts officer", who use their skills to handle aggressive probation violators, with Sun-min serving as his partner and mentor. After taking on the job, the two become fast friends and Jung-do soon considers Sun-min to be like an older brother to him. Their work also instils a strong sense of justice in Jung-do.