Detective Nam-soon goes undercover with her partner Detective Ahn to investigate the counterfeit money. She discovers that one loyal henchman, Sad Eyes, a beautiful swordsman with a pale, blank face, is related to the truth. Nam-soon and Sad Eyes confront each other in a series of duels and become confused between love and obligation to duty.
Unfortunately the movie Duelist is not yet available on HBO Max.
| Crew | Seo Jeong-Su | Stunts |
| Crew | Seo Myeong-seok | Stunts |
| Crew | Baek Kyung-chan | Martial Arts Choreographer |
| Art | Lee Hyung-joo | Production Design |
| Lighting | Shin Kyung-man | Lighting Design |
| Sound | Park Joon-oh | Original Music Composer |
| Writing | Lee Hae-Jyung | Screenplay |
| Crew | Shin Kyung-man | Lighting Camera |
| Sound | Cho Sung-woo | Original Music Composer |
| Production | Eunsil O | Producer |
| Production | Sumi O | Producer |
| Directing | Lee Myung-se | Director |
| Visual Effects | Hwang Han Kyu | Visual Effects |
| Writing | Lee Myung-se | Screenplay |
| Sound | Park Jun-o | Sound Supervisor |
| Editing | Ko Im-pyo | Editor |
| Camera | Hwang Ki-suk | Director of Photography |
| Sound | Lee Sang-wook | Sound Recordist |
| Costume & Make-Up | Hwang Hyun-gyu | Makeup & Hair |
| Art | Hong Ju-hui | Art Direction |
| Editing | Yang Jin-mo | Assistant Editor |
| Visual Effects | Park Yeong-su | Visual Effects Supervisor |
| Art | Cho Keun-hyun | Production Design |
| Editing | Kyu Hyung Ray Lee | Colorist |
| Crew | Jeon Yu-jun | Fight Choreographer |
| Costume & Make-Up | Jeong Kyung-hee | Costume Design |
| Sound | Choi Sung-rok | Dialogue Editor |
