The police department was under great pressure after the suspect was shot dead in the rape case of a young girl that shocked the country. At the Blue House, under the attention of the president, the Chief of Police decided to let the unbackground Sergeant Cui Chel-ki (played by Huang Zhengmin) to close the case, and promised to be promoted upon completion. Cui Zheji found the informant Zhang Xiqiu (played by Liu Haizhen). Previously,...