Veteran police Xu Guozhu, Cui Tiejun, and Pan Jianghai held remarkable record during times of war. Once walking manifestation of justice and guardians of the people, they are now settled for office tasks as they aged and younger officers such as Lin Nan began to take over fieldwork. And yet unsettled... Before long, the bureau of economic offence investigation receives a financial fraud case that could only be solved with Xu, Cui, and Pan's valor and experience. The three avuncular fighter of justice, in joint force, reinstate their former positions and embark on an investigation of the earth-shattering criminal case, which soon guided them towards a major drug-dealing case that remains unsolved for twenty years.