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.
Unfortunately the movie Once We Were Us is not yet available on Disney Plus.
| 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 | Song Yong-un | Line Producer |
| Production | Lee Jung-suk | Executive Producer |
| Production | Justin Choi | Producer |
| Production | Lee Young-han | Producer |
| Writing | Yeum Moon-kyoung | Writer |
| Writing | Kim Ha-na | Writer |
| Sound | Jay Kim | Original Music Composer |
