During the reign of King Sejong in the 15th century, the Joseon Dynasty was the embodiment of the perfect state. To the Ming China, the aspiring imperial power, Joseon presented an obstacle to territorial expansion. To protect themselves from war, King Sejong develops a secret weapon to defend their territory and take back their land and supremacy.
| Directing | Kim Yoo-jin | Director |
| Sound | Kim Suk-won | Sound Supervisor |
| Writing | Lee Man-hee | Writer |
| Sound | Kim Chang-seop | Sound Supervisor |
| Sound | Cho Sung-woo | Original Music Composer |
| Editing | Kim Hyun | Editor |
| Art | You Cheong | Props |
| Costume & Make-Up | Jeong Kyung-hee | Costume Design |
| Lighting | Lim Jae-young | Lighting Director |
| Visual Effects | Jung Sung-jin | Visual Effects Supervisor |
| Art | Min Eon-ok | Production Design |
| Writing | Shin Hyeon jeong | Writer |
| Writing | Gang Hui-yeon | Writer |
| Crew | Han Jeong-uk | Stunts |
| Crew | Kwon Ji-hoon | Stunts |
| Visual Effects | Lee Jeon-hyoung | Visual Effects Supervisor |
| Visual Effects | Kim Byeong-gi | Special Effects Supervisor |
