市稽查局二科科长赵刚接到李局长交办的一份稽查西城修配门市部偷税的案件。赵刚细心地查看检举材料的每一个细节，并在笔记本上详细作了记录。 下午，赵刚带着本科室的两位同志，乘车到城西，见到西城修配门市部的老板。 赵刚怎么也没想到，这位老板竟是自己多年未见面的师妹 Zhao Gang, chief of the Second Section of the Municipal Bureau of Inspection, received an examination of the tax evasion case of Xicheng Renovation Shop Branch by Mr. Li. Zhao Gang carefully check every detail of the material reported and made a detailed record in the notebook. Afternoon, Zhao Gang with two gratuities undergraduate department, rode to the west, see Xicheng repair shop with the boss. Zhao Gang did not think of how, the boss was actually his own sister who did not meet for many years