Een vrouw wil wraak nemen als haar jongere zusje verdwijnt en ze ontdekt dat haar zusje het slachtoffer is geworden van geweld en seksueel misbruik door pesterijen op school.
Nee, helaas is 언니 nog niet beschikbaar op Netflix in Nederland.
| Art | Jeon Sung-ho | Set Decoration |
| Crew | Lee Sang-ha | Stunts |
| Writing | Lim Kyoung-tack | Adaptation |
| Editing | Kim Mi-joo | Editor |
| Crew | Lim Wang-sub | Martial Arts Choreographer |
| Art | Kim Jin-hee | Art Direction |
| Sound | Kang Bong-sung | Production Sound Mixer |
| Directing | Lim Kyoung-tack | Director |
| Costume & Make-Up | Lee Jin-suk | Costume Design |
| Art | Lee Hyun-joo | Production Design |
| Costume & Make-Up | Choi Na-young | Makeup & Hair |
| Lighting | Song Jae-wan | Lighting Director |
| Visual Effects | Park Dae-hun | Special Effects Supervisor |
| Sound | 정진모 | Boom Operator |
| Visual Effects | 서상화 | Visual Effects |
| Production | 최광래 | Executive Producer |
