The story revolves around Shang Jie, the overly critical head of a crime investigation team; Xia Ying, a forensic examiner who is completely engrossed with her profession; Li Xue Kai, a detective and a good tracker; Song Mi, an innocent and ditsy analyst and Ying Ming, a second-generation rich who works as a criminal psychologist. The five form an unlikely team as they are the rejects of the department, yet through teamwork and dedication, they succeed in solving the most unusual murder cases.