Eunjo, Moonnie, and Geun-young are old friends. To live a more disciplined life, Moonnie hires a hitman to kill her if she fails to follow her schedule. The next day, Moonnie goes missing. Amateur detective Geun-young begins investigating to find her friend, and her suspicions turn towards Eunjo.
| Actor | Role |
|---|---|
| OOn Jeong-yeonMoonnie | Moonnie |
| LLee Hye-aEun-jo | Eun-jo |
| AAn Tae-joogeun-young | geun-young |