A female college student falls from a building in a bizarre manner. Cheng Rui, the deputy captain of the Criminal Investigation Detachment who has just been transferred to the post, is assigned by the deputy director Du Yulin to investigate the hidden story behind the case.
| Actor | Role |
|---|---|
 Wang JinsongDu Yulin | Du Yulin |
 Zhou YiweiCheng Rui | Cheng Rui |
 Julian CheungZhao Xianyu | Zhao Xianyu |
 Eric Tsang Chi-WaiAn Yiming | An Yiming |
 Wang XunHou Wenwu | Hou Wenwu |
 Richard Ng Man-TatUncle Da | Uncle Da |
 Shao BingLu Peng | Lu Peng |
 Ray LuiZhou Shenghua | Zhou Shenghua |
 Dong XuanShen Shuyuan | Shen Shuyuan |
 Qin HailuZhou Tong | Zhou Tong |
 Cao WeiyuLi Qiang | Li Qiang |
 Zhang YishangYasu | Yasu |
 Xiao YangOfficer Shaw | Officer Shaw |
| KKuang XiaotongTongtong | Tongtong |
| LLena ChenZhu Di | Zhu Di |
 Marc MaNot listed | Not listed |
 Chen Yuxian高月 | 高月 |
 John Ching TungNot listed | Not listed |
 Yi MoNot listed | Not listed |