Jeong-hye gives a birth to a baby boy in the prison. Her and other inmates create a women's choir to compete in the national choir contest, to meet and greet their families and loving ones.
Is Harmony on Netflix? Yes! The movie Harmony is now on Netflix in the countries listed below.
| Lighting | Hwang Sun-wook | Lighting Director |
| Directing | Kang Dae-gyu | Director |
| Art | Park Jae-wan | Props |
| Camera | Teo Lee | Camera Operator |
| Visual Effects | Yoon Dae-won | Special Effects Supervisor |
| Visual Effects | Ryu Jae-hwan | VFX Supervisor |
| Editing | Park Eun-kyung | Assistant Editor |
| Editing | Shin Min-kyung | Editor |
| Writing | JK Youn | Writer |
| Production | Kil Young-min | Executive Producer |
| Production | JK Youn | Executive Producer |
| Production | Yoon Ick-jun | Line Producer |
| Camera | Kim Young-ho | Director of Photography |
| Art | Kang So-yeong | Production Design |
| Costume & Make-Up | Choi Yoon-sun | Costume Design |
| Art | Koh Jae-young | Art Direction |
| Crew | Jeon Yu-jun | Fight Choreographer |
| Production | Jung Jae-won | Producer |
| Writing | Lee Seung-yeon | Writer |
| Writing | Kang Dae-gyu | Adaptation |
| Writing | Kim Hwi | Adaptation |
| Sound | Eun Hee-soo | Production Sound Mixer |
| Sound | Lee Seung-yeop | Sound Supervisor |
| Visual Effects | Hong Jang-pyo | Special Effects Supervisor |
| Editing | Park Jin-young | Colorist |
| Sound | Shin I-kyung | Original Music Composer |
| Costume & Make-Up | Jang Jin-jung | Makeup & Hair |
