The book tells the story of "Nan Xia Zhan Zhao" and "Ding Yuehua", the sister of Ding's Double Heroes, and the Five Rats of Jiangnan (Lu Fang, Han Zhang, Xu Qing, Jiang Ping, Bai Yutang) during the Northern Song Dynasty. Zhan Zhao was moved by "Bao Zheng"'s upright and upright behavior of killing harm for the sake of fame, and voluntarily followed him. However, he never wanted to be named a royal cat by the emperor, so he formed a relationship with the "Five Rats of Jiangnan". Among them, Bai Yutang was rebellious and wanted to compete with Zhan Zhao, so he rushed to Bianliang, Tokyo. Zhan Zhao's fiancée (Ding Yuehua) knew the news and rushed there, but met Bai Yutang on the way. In order to avoid conflicts with Bai Yutang in Tokyo and solve the problem of Pang Yu in Chenzhou, Zhao volunteered to be an undercover agent. In order to avoid being noticed by Master Pang, he could only pretend to be an enemy of Master Bao. However, her fiancée Ding Yuehua, who was highly skilled in martial arts and smart, quickly saw through the strangeness and chose to help Bao Zheng and bring down Master Pang. From this, a story began to unfold.
