A by-the-book police officer is assigned to secretly investigate a team leader who believes that the rules shouldn't stop an investigation. As the officer investigates further, his own attitudes begin to mirror the team leader's.
Unfortunately the movie The Policeman's Lineage is not yet available on Disney Plus.
| Art | Kim Nam-ho | Set Decoration |
| Production | Kim Min-kyung | Producer |
| Costume & Make-Up | Kwak Tae-yong | Special Effects Makeup Artist |
| Crew | Ryu Seong-cheol | Stunts |
| Visual Effects | Yoon Dae-won | Special Effects Supervisor |
| Costume & Make-Up | Lee Hee-eun | Special Effects Makeup Artist |
| Crew | Kwon Gwi-deok | Stunts |
| Writing | Son Tae-woong | Adaptation |
| Production | Jung Hyun-ju | Executive Producer |
| Editing | Nam Na-young | Editor |
| Costume & Make-Up | Kim Kyeong-mi | Costume Design |
| Writing | Bae Young-ik | Writer |
| Lighting | Kim Hyo-seong | Lighting Director |
| Production | Lee Han-seung | Producer |
| Costume & Make-Up | Lee Eun-ju | Makeup & Hair |
| Sound | Lee Seung-yeop | Sound Supervisor |
| Crew | Choi Bong-rock | Martial Arts Choreographer |
| Art | Jin Hoon | Props |
| Sound | Park Jun-o | Foley Artist |
| Sound | Han Cheol-hui | Production Sound Mixer |
| Costume & Make-Up | Kim Ho-sik | Special Effects Makeup Artist |
| Directing | Lee Tai-sung | Assistant Director |
| Editing | 이정민 | Digital Intermediate |
| Visual Effects | Kim Gwang-wook | VFX Supervisor |
| Crew | Lee Sang-min | Stunts |
| Crew | Park Gab-jin | Stunts |
| Camera | Park Gwan-yeol | Key Grip |
| Directing | Lee Kyu-man | Director |
| Writing | Joh Sasaki | Novel |
| Art | Chae Kyoung-sun | Production Design |
| Sound | Jang Young-gyu | Original Music Composer |
| Camera | Kang Gook-hyun | Director of Photography |
| Crew | Lee Seung-chang | Stunts |
