Seoul, 2008. On a bus heading to their hometown, fate brings Eun-ho and Jeong-won together, sparking an unlikely friendship. While battling a bustling and weary city life, they find themselves sharing lofty dreams and a love that comes to feel extraordinary. But, eventually, the harsh realities of life lead them to part ways. Over a decade after the separation, the two unexpectedly reunite on a flight back to Korea, where they reflect on their lost time.
Is Once We Were Us on Netflix? Unfortunately the movie Once We Were Us is not yet available on Netflix.
| Directing | Kim Do-young | Director |
| Writing | Yuan Yuan | Original Film Writer |
| Writing | Shing-Ming Ho | Original Film Writer |
| Writing | Yu Pan | Original Film Writer |
| Writing | Wei An | Original Film Writer |
| Writing | René Liu | Original Film Writer |
| Visual Effects | Choi Min-ho | VFX Supervisor |
| Visual Effects | Park Dae-hun | Special Effects Supervisor |
| Costume & Make-Up | Son Eun-kyung | Makeup & Hair |
| Sound | Go Eun-ha | Sound Supervisor |
| Sound | Jung Jin-wook | Production Sound Mixer |
| Lighting | Yoon Jong-han | Lighting Director |
| Costume & Make-Up | Lee Jin-ah | Costume Design |
| Editing | Lee Kang-hee | Editor |
| Art | Eun Hee-sang | Production Design |
| Camera | Shin Tae-ho | Director of Photography |
| Production | Lee Jung-suk | Executive Producer |
| Production | Justin Choi | Producer |
| Production | Lee Young-han | Producer |
| Sound | Jay Kim | Original Music Composer |
| Editing | Lee Eun-Song | Colorist |
| Writing | René Liu | Short Story |
| Production | Song Yong-un | Producer |
| Art | Oh Jin-seok | Props |
| Writing | Yeum Moon-kyoung | Writer |
| Writing | Kim Ha-na | Writer |
| Production | Song Yong-un | Line Producer |
| Production | Lee Bok-seon | Line Producer |
| Directing | Im Jang-eop | Assistant Director |
| Camera | Kim Hak-su | Grip |
| Art | Nam Seong-ju | Set Decoration |
