Chi-ho, a genius confectionery researcher who has developed addictive flavors, experiences a sweet change when he meets Il-yeong, a call center worker at a loan screening company who thinks optimistically about everything, and goes through sweet changes.
| Directing | Lee Han | Director |
| Writing | Lee Byeong-heon | Writer |
| Production | Kim Jae-joong | Executive Producer |
| Production | Yoon Seo-young | Producer |
| Writing | Lee Han | Adaptation |
| Camera | Lee Tae-yoon | Director of Photography |
| Lighting | Yoo Huck-jun | Lighting Director |
| Editing | Nam Na-young | Editor |
| Sound | Cho Young-wuk | Original Music Composer |
| Art | Kim Hyun-ok | Production Design |
| Costume & Make-Up | Kim Jung-won | Costume Design |
| Costume & Make-Up | Lee Seo-jin | Makeup & Hair |
| Sound | Jeong Gwang-ho | Production Sound Mixer |
| Sound | Kim Suk-won | Sound Supervisor |
| Visual Effects | Hong Jang-pyo | Special Effects Supervisor |
| Visual Effects | Son Seung-hyeon | VFX Supervisor |
| Crew | Jeong Yoon-heon | Martial Arts Choreographer |
| Editing | Kim Hyung-seok | Colorist |
| Crew | Yun Min-gyu | Martial Arts Choreographer |
| Production | Yang Soo-jung | Executive Producer |
| Visual Effects | Heo Yeong-tak | VFX Supervisor |
| Visual Effects | Kim Han-jun | VFX Supervisor |
| Crew | Moon Gwang-sik | Stunts |
| Visual Effects | Kim Shin-chul | VFX Supervisor |
| Art | Eom Se-yong | Props |
