De film volgt het personeel en de gasten van een luxe hotel tijdens de feestdagen eind december. Eenieder heeft zo zijn of haar besognes, maar uiteindelijk draait allemaal om liefde en geluk. Centraal staat het verhaal over de ontluikende relatie van de hoteldirecteur met een nieuw kamermeisje, dat droomt van een carrière als musicalster.
Nee, helaas is 해피 뉴 이어 nog niet beschikbaar op Netflix in Nederland.
| Directing | Kwak Jae-yong | Director |
| Writing | Yoo Seung-hee | Writer |
| Production | William Kim | Executive Producer |
| Production | Kang Ga-mi | Producer |
| Writing | Kwak Jae-yong | Adaptation |
| Writing | Shin Eun-gyeong | Adaptation |
| Lighting | Kim Min-jae | Lighting Director |
| Editing | Kim Hyung-ju | Editor |
| Sound | Kim Jun-seong | Original Music Composer |
| Art | An Ji-hye | Production Design |
| Costume & Make-Up | Shin Ji-young | Costume Design |
| Costume & Make-Up | Lee Eun-ju | Makeup & Hair |
| Sound | Gong Tae-won | Sound Supervisor |
| Crew | Jeong Seong-ho | Martial Arts Choreographer |
| Camera | Yang Hyeon-seok | Director of Photography |
| Sound | Choi Min-ho | Production Sound Mixer |
| Visual Effects | Shin Dae-yong | VFX Supervisor |
| Art | Kim Hyung-jik | Set Decoration |
| Crew | Lee Sang-ha | Stunts |
| Editing | Park Jin-ho | Digital Intermediate |
| Visual Effects | Jeon Min-gyu | VFX Supervisor |
| Directing | Kim Jang-mi | Assistant Director |
| Visual Effects | Kim Nam-sik | VFX Supervisor |
| Costume & Make-Up | Sin Eun-yeong | Makeup Artist |
| Camera | Kang Sang-hyup | Key Grip |
| Camera | Lee Hyun | "C" Camera Operator |
| Costume & Make-Up | Seol Ha-un | Special Effects Makeup Artist |
| Camera | Jeon Seung-hwan | Grip |
| Art | Kim Jeong-hoon | Set Decoration |
| Camera | Park Byung-deok | Still Photographer |
| Visual Effects | Jo Gyeong-hun | Visual Effects Director |
