Jinsa Maeng's daughter is contracted to marry a nobleman's son, however, Jinsa Maeng is upset when he hears about a rumor that the fiance of his daughter is lame. Finally, he decides to take on the idea of arranging his maid to take his daughter's place in the wedding.
Unfortunately the movie A Happy Day of Jinsa Maeng is not yet available on HBO Max.
| Editing | Yu Jae-won | Editor |
| Lighting | Hae-jin Go | Lighting Director |
| Sound | Dae-hyeon Kim | Music |
| Production | Kim Yeong-gi | Producer |
| Camera | Lee Yong-min | Director of Photography |
| Production | Lee Su-hyeong | Producer |
| Writing | Yeong-jin O | Screenplay |
| Art | Myung-sun Yim | Art Direction |
| Costume & Make-Up | Lee Hae-won | Costume Designer |
| Costume & Make-Up | An Kon-ho | Makeup Artist |
| Directing | Kim Seong-sil | Assistant Director |
| Sound | Jeong Yoon-joo | Sound Recordist |
| Production | Lee Seong-geun | Producer |
| Directing | Lee Yong-min | Director |
