Een ambitieuze politieman wil de topman van het grootste drugskartel van Azië ontmaskeren. Om zijn doel te bereiken doet hij een beroep op een lid van de bende die wraak wil nemen op zijn baas. Het blijkt echter een levensgevaarlijke opdracht om het tegen de psychotische baas op te nemen.
Nee, helaas is Believer nog niet beschikbaar op Netflix in Nederland.
| Visual Effects | 강종익 | VFX Supervisor |
| Visual Effects | Kim Jung-hun | VFX Supervisor |
| Crew | 허명행 | Martial Arts Choreographer |
| Production | Ham Jin | Producer |
| Production | 이유정 | Associate Producer |
| Editing | 박진영 | Digital Intermediate |
| Art | 송석기 | Set Decoration |
| Production | 김동식 | Line Producer |
| Crew | 류성철 | Stunts |
| Crew | Jeong Jin-geun | Martial Arts Choreographer |
| Art | Im Se-jin | Art Direction |
| Writing | Lee Yoon-ho | Storyboard |
| Writing | 游乃海 | Original Film Writer |
| Writing | 韋家輝 | Original Film Writer |
| Visual Effects | Chan-jin Chris Kim | Visual Effects Producer |
| Lighting | Hong Seung-chul | Lighting Director |
| Editing | Lim Hye-jin | Assistant Editor |
| Sound | 안복남 | Production Sound Mixer |
| Production | Jang Eun-young | Line Producer |
| Costume & Make-Up | Heo Jin | Costumer |
| Costume & Make-Up | Shin Soo-bin | Costumer |
| Directing | 이해영 | Director |
| Writing | 정서경 | Screenplay |
| Writing | 이해영 | Screenplay |
| Camera | Kim Tae-kyeong | Director of Photography |
| Camera | Jeon Young-wook | Still Photographer |
| Camera | Ji Sung-yong | Key Grip |
| Production | Jeong Hui-sun | Producer |
| Production | Han Seung-hee | Producer |
| Production | 윤석찬 | Producer |
| Editing | 양진모 | Editor |
| Art | 이하준 | Production Design |
| Costume & Make-Up | 최세연 | Costume Design |
| Production | 임승용 | Executive Producer |
| Costume & Make-Up | Jang Yoon-jung | Makeup & Hair |
| Sound | Hong Ye-yeong | Sound Designer |
| Visual Effects | Hong Jang-pyo | Special Effects Supervisor |
| Sound | 달파란 | Original Music Composer |
| Production | Cha Hyun-woo | Executive Producer |
| Production | 김우택 | Co-Executive Producer |
| Costume & Make-Up | Kang Dong-yul | Costume Design |
| Art | 오유진 | Props |
| Art | Mo So-ra | Art Direction |
| Art | Jeon Jae-wook | Props |
| Directing | Cho Yong-jin | Assistant Director |
| Sound | Kim Young-ho | Sound Mixer |
| Visual Effects | Jung Sung-jin | Visual Effects Supervisor |
| Production | Yeijin Cho | Production Coordinator |
| Visual Effects | 김우철 | VFX Supervisor |
| Crew | 심철민 | Stunts |
