Hou Liang Ping was appointed as an associate prosecutor and the director of the anti-corruption department in Bian Xi Province, to investigate a case of murder. His wife Zhong Xiao Ai, appointed by the Central Commission for Discipline Inspection, in the name of looking after the family, was also deployed to Bian Xi to secretly investigate the corruption of Hu. Experiencing many difficulties and setbacks, Hou and Zhong had been approaching the truth and the criminal groups behind the murder.
