Days after her friends disappear during a trip to a mysterious cave, a girl is approached by a grown man claiming to be one of her missing pals.
You can now watch Vanishing Time: A Boy Who Returned online on the following streaming providers in the United States.
| Writing | Um Tae-hwa | Writer |
| Directing | Um Tae-hwa | Director |
| Sound | Dalpalan | Original Music Composer |
| Camera | Go Rak-sun | Director of Photography |
| Production | Kwak Sin-ae | Producer |
| Writing | Jo Seul-yeah | Writer |
| Editing | Kim Chang-ju | Editor |
| Costume & Make-Up | Yun Mi-ra | Costume Design |
| Art | So Seong-hyun | Art Direction |
| Lighting | Lee Seung-bin | Lighting Director |
| Sound | Yim Dong-seok | Production Sound Mixer |
| Visual Effects | Jeon Gun-ik | Special Effects Supervisor |
| Art | Kim Jung-woo | Set Decoration |
| Visual Effects | Han Tae-jung | VFX Supervisor |