Gurus in the late Goryeo dynasty try to obtain a fabled, holy sword, and humans in 2022 hunt down an alien prisoner that is locked in a human's body. The two parties cross paths when a time-traveling portal opens up.
You can now watch Alienoid online on the following streaming providers in the United States.
| Directing | Choi Dong-hoon | Director |
| Camera | Kim Tae-kyeong | Director of Photography |
| Art | Ryu Seong-hie | Production Design |
| Art | Lee Ha-jun | Production Design |
| Crew | Yoo Sang-seob | Martial Arts Choreographer |
| Crew | Ryu Seong-cheol | Martial Arts Choreographer |
| Costume & Make-Up | Cho Sang-kyung | Costume Design |
| Sound | Jang Young-gyu | Original Music Composer |
| Writing | Choi Dong-hoon | Writer |
| Art | Kwon Soo-yeon | Art Direction |
| Art | Choi Ji-hye | Art Direction |
| Editing | Park Jin-young | Digital Intermediate |
| Art | Mo So-ra | Art Direction |
| Art | Lee Gi-seok | Set Decoration |
| Visual Effects | Hong Jeong-ho | VFX Supervisor |
| Art | Jang Hee-sun | Art Designer |
| Art | Im Se-jin | Art Designer |
| Visual Effects | Jay Seung Jaegal | VFX Supervisor |
| Crew | Jay Seung Jaegal | Visual Effects Art Director |
| Crew | Kwon Ji-hoon | Stunts |
| Visual Effects | Han Moon-sung | VFX Supervisor |
| Visual Effects | Jung Do-ahn | Special Effects Supervisor |
| Visual Effects | Yoon Hyung-tae | Special Effects Supervisor |
| Editing | Shin Min-kyung | Editor |
| Production | Kang Ho-sung | Executive Producer |
| Art | You Cheong | Props |
| Art | Park Jun-yong | Props |
| Costume & Make-Up | Kim Hyun-jung | Makeup & Hair |
| Costume & Make-Up | Hwang Hyo-kyun | Special Effects Makeup Artist |
| Costume & Make-Up | Kwak Tae-yong | Special Effects Makeup Artist |
| Sound | Eun Hee-soo | Production Sound Mixer |
| Sound | Choi Tae-young | Sound Supervisor |
| Production | Kim Sung-min | Producer |
| Writing | Lee Ki-cheol | Writer |
| Camera | Lee Jae-hyeok | Still Photographer |
| Visual Effects | Lee Eun-mi | Compositing Artist |
| Production | Yang Eun-jeong | Line Producer |
| Camera | Ji Sung-yong | Key Grip |
| Directing | Hwang Jae-jin | Assistant Director |
| Lighting | Hong Seung-chul | Gaffer |
| Production | Ahn Soo-hyun | Producer |
| Production | Choi Dong-hoon | Producer |
| Camera | Lim Won-geun | Camera Operator |
| Sound | Yang Hye-jin | Sound Editor |
