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.
Unfortunately the movie Harmony is not yet available on Disney Plus.
| Lighting | Hwang Sun-wook | Lighting Director |
| Directing | Kang Dae-gyu | Director |
| Writing | Lee Seung-yun | Writer |
| Art | Park Jae-wan | Props |
| Camera | Teo Lee | Camera Operator |
| Sound | Shin I Kyung | Music |
| Sound | Shin I Kyung | Music |
| 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 |
| Writing | Kang Dae-gyu | Adaptation |
| Production | JK Youn | Executive Producer |
| Production | Kil Young-min | Executive Producer |
| Production | Yoon Ick-jun | Line Producer |
| Camera | Kim Yeong-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 |
