Guo Shaoy

Tim Sir (played by Wong Chun-wah), a senior chemist in the Legal and Political Department, has extensive knowledge. Thanks to his superb physical evidence examination skills, he has solved many strange cases. His subordinate and close friend, Sam (played by Lin Wenlong), is also an outstanding forensic expert. Recently, he is preparing to get married to his long-time girlfriend, Ting Ting (played by Zhong Jiaxin)

Twenty years ago, a surgery led to the estrangement between two pediatric specialist interns, Kuang Congxin (played by Ma Guoming) and Xu Ganfeng (played by Zheng Jia Ying). As time passed, Cong Xin became a consultant pediatric surgeon at the top hospital "Annie Hospital", while Gan Feng, who was determined to defend life, settled in a second-tier hospital. The two had been going their separate ways

Gao Yanbo (played by Wong Chun-wah), a calm and rational senior laboratory technician in the Legal and Political Department, has an extraordinary insight. With just a hair or a piece of clothing fiber, he can assist the police in solving cases. But what he didn't expect was that his wife's younger brother, Gu Zechen (played by Lin Wenlong), a forensic doctor, and senior inspector Liang Xiaorou (played by Meng Jiahui), were both pregnant