Three old friends who used to be part of a rock band reunite at the fourth member's funeral. They decide to band back together with the deceased's estranged son serving as the new fourth member.
Unfortunately the movie Happy Life is not yet available on HBO Max.
| Writing | Choi Seok-hwan | Screenplay |
| Sound | Lim Hyeong Geun | Sound Effects |
| Directing | Lee Joon-ik | Director |
| Production | Jeong Seung-hye | Producer |
| Production | Cho Chul-hyun | Producer |
| Costume & Make-Up | Kim Jung-won | Costume Design |
| Sound | Kim Bong-soo | Sound Supervisor |
| Costume & Make-Up | Jang Yoon-jung | Makeup & Hair |
