A skilled killer named Shui is forced to retire after a failed mission. He moves into an apartment arranged by the organization. However, unexpected murders start happening in the community. Shui decides to investigate and discovers that the community is concealing a conspiracy — there are hidden killers carrying out missions. Trapped in a dangerous situation, Shui’s only recourse comes from his ordinary neighbors.
| Actor | Role |
|---|---|
 Kaiser ChuangBrother Shui | Brother Shui |
 Lee Yi-chiehFang Ting | Fang Ting |
 Lotus WangOld lady | Old lady |
 David ChaoUncle Da | Uncle Da |
 Wang Lan-shenShaman | Shaman |
| PPinZiDou Yin Killer | Dou Yin Killer |
 Alexei HuangChairman | Chairman |
 Chien Tsung-fuThe old man | The old man |
 Lo ShenYi Xiong | Yi Xiong |