Koning Gwang-hae is verwikkeld in een intrige in zijn paleis dat tot doel heeft hem te vermoorden. Gwang-hae vraagt zijn vertrouwde raadslid Heo Kyun om een dubbelganger voor hem te vinden. Deze wordt gevonden in Ha-seon. Wanneer de koning instort door een mysterieus gif, moet Ha-seon de grootste maskerade uit zijn carrière uitvoeren om het land te redden. Dit terwijl hij voortdurend met de dood bedreigd wordt.
Nee, helaas is Gwanghae, Wangyidoen Namja nog niet beschikbaar op Netflix in Nederland.
| Crew | Park Jung-ryul | Martial Arts Choreographer |
| Visual Effects | 백상훈 | Visual Effects Supervisor |
| Visual Effects | 정재훈 | VFX Supervisor |
| Sound | 모그 | Original Music Composer |
| Lighting | Oh Seung-chul | Gaffer |
| Crew | Kim Jung-min | Stunts |
| Costume & Make-Up | Kim Jin-ju | Costume Design |
| Sound | Kim Jun-seong | Original Music Composer |
| Costume & Make-Up | Im Jeong-hui | Costume Design |
| Directing | 추창민 | Director |
| Visual Effects | Yoon Dae-won | Special Effects Supervisor |
| Writing | Lee Yoon-ho | Storyboard |
| Editing | 김형석 | Digital Colorist |
| Directing | 장재현 | Assistant Director |
| Sound | 이상준 | Production Sound Mixer |
| Writing | 황조윤 | Screenplay |
| Camera | Lee Tae-yoon | Director of Photography |
| Production | Jeong Ji-hoon | Producer |
| Production | Kim Ho-sung | Producer |
| Sound | Lee Sung-jin | Sound Supervisor |
| Sound | Lee Seung-chul | Sound Supervisor |
| Production | 원동연 | Producer |
| Sound | Han Myung-hwan | Sound Mixer |
| Editing | Nam Na-young | Editor |
| Production | 이미경 | Executive Producer |
| Costume & Make-Up | 권유진 | Costume Design |
| Costume & Make-Up | 조태희 | Makeup & Hair |
| Art | 오유진 | Props |
| Art | Oh Heung-seok | Production Design |
| Production | Kim Yeong-don | Co-Executive Producer |
| Production | 이준규 | Production Manager |
| Visual Effects | Park Choul-yong | Special Effects Supervisor |
| Editing | Kim Baek-cheol | Digital Intermediate |
| Editing | Ryu Yeon | Digital Intermediate Producer |
| Visual Effects | 오석근 | VFX Artist |
| Art | 김승경 | Art Direction |
