A biochemistry expert is enlisted to probe a string of water-borne killings blamed on a “kappa.” As the case deepens, he discovers ties to his long-missing father and a professor conducting illegal human experiments.
| Actor | Role |
|---|---|
 Denny HuangNot listed | Not listed |
 Zhang ShashaNot listed | Not listed |
 Zheng XiaomingNot listed | Not listed |
 He YongshengNot listed | Not listed |
 Min ZhengNot listed | Not listed |
 Huang JilongNot listed | Not listed |
 Wu ChunyiNot listed | Not listed |
 Zeng ChenNot listed | Not listed |
 Yue DongfengNot listed | Not listed |
 Li JunNot listed | Not listed |