In a DVD-themed sex hotel, a young employee has hidden drugs in room #7 for criminals in exchange for wiping off his debt. But then his boss hides a dead body in the same room and locks the door. And a dangerous battle of wits ensues between a man who must lock away the secret behind the door, and another, who must go inside.
| Directing | Lee Yong-seung | Director |
| Writing | Lee Yong-seung | Screenplay |
| Camera | Sung Seung-taek | Director of Photography |
| Editing | Park Kyoung-suk | Editor |
| Production | Shim Jae-myung | Producer |
| Art | Bang Gil-sung | Production Design |
| Production | Moon Yong-chan | Producer |
| Visual Effects | Hong Jeong-ho | Visual Effects Supervisor |
| Sound | Lee Ji-soo | Original Music Composer |
| Editing | Steve M. Choe | Editor |
| Costume & Make-Up | Choi Yeong-sim | Makeup & Hair |
| Art | Oh Jin-seok | Props |
| Lighting | Jeong Duk-hee | Lighting Technician |
| Editing | Kim Il-kwang | Digital Intermediate |
| Art | Yoon Sung-hye | Art Direction |
| Visual Effects | Moon Sung-oh | Animation Supervisor |
| Visual Effects | Kim Gwang-su | Special Effects Supervisor |
| Sound | Moon Chul-woo | Sound Mixer |