Hyun-su and Soo-jin have just gotten married. Seemingly out of nowhere, he starts talking in his sleep. 'Someone’s inside.' From that night forward, whenever he falls asleep, he transforms into someone else with no recollection of the night before. Soo-jin is overwhelmed with anxiety that he’d hurt her family while she sleeps and can barely sleep a wink because of this irrational fear. Despite sleep treatment, Hyun-su’s sleepwalking only intensifies, and she begins to feel that her unborn child may be in danger...
Unfortunately the movie Sleep is not yet available on HBO Max.
| Directing | Jason Yu | Director |
| Writing | Jason Yu | Screenplay |
| Editing | Lee Hye-min | Colorist |
| Costume & Make-Up | Kim Eun-ha | Makeup & Hair |
| Visual Effects | Kim Dong-myeong | Visual Effects Supervisor |
| Visual Effects | Jeon Gun-ik | Special Effects Supervisor |
| Art | Kim Nam-ho | Set Decoration |
| Sound | Park Seong-ho | Production Sound Mixer |
| Costume & Make-Up | Yang Hyeon-seo | Costume Design |
| Crew | Park Young-sik | Martial Arts Choreographer |
| Art | Lee Sang-hun | Props |
| Production | Kim Hee-gyeong | Producer |
| Production | Lewis Taewan Kim | Executive Producer |
| Production | Choi Moon-seok | Co-Executive Producer |
| Camera | Yoon Jong-woon | Key Grip |
| Directing | Lee Hyung-seob | Assistant Director |
| Camera | Kim Tae-soo | Director of Photography |
| Editing | Han Mi-yeon | Editor |
| Art | Shin Yoo-jin | Production Design |
| Sound | Gong Tae-won | Sound Supervisor |
| Sound | Jang Hyeok-jin | Original Music Composer |
| Production | Choi Pyung-ho | Executive Producer |
| Lighting | Lee Je-woo | Lighting Director |
| Production | Choi Byung-hwan | Executive Producer |
| Sound | Jang Yong-jin | Original Music Composer |
| Art | Jung Hyo-eun | Props |
