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 |
| Writing | Yeong-jin O | Screenplay |
| Camera | Lee Yong-min | Director of Photography |
| Sound | Jeong Yoon-joo | Sound Recordist |
| Production | Kim Yeong-gi | Producer |
| Lighting | Hae-jin Go | Lighting Director |
| Production | Lee Su-hyeong | Producer |
| Sound | Dae-hyeon Kim | Music |
| Costume & Make-Up | Lee Hae-won | Costume Designer |
| Directing | Kim Seong-sil | Assistant Director |
| Art | Myung-sun Yim | Art Direction |
| Costume & Make-Up | An Kon-ho | Makeup Artist |
| Directing | Lee Yong-min | Director |
| Production | Lee Seong-geun | Producer |
