Ji Lingge, a policewoman in Minghai City, met Fasse, a delinquent young man with the identity of the suspect, while handling a murder case without witnesses, and discovered his amazing "hole-digging" skills. Soon another unsolved case on campus occurred. Ji Lingge asked Fasai for help. Although Fasai met a suspect with the same skills as him, the case was finally solved by him. However, cases continued, and Fa Sai and Ji Lingge began to handle cases together, including the case of falling from a building, the case of anti-secret murder... Who is the murderer?
