In the 10th year of Yongle in the Ming Dynasty, a new "Zhiwei Study" was opened on Nanshi Street in Yingtianfu. Zhilan Yuxiu's shopkeeper Yun Yourong moved here from Yunnan with his cute little boy Xiaoxiao. Within a month, he was inexplicably involved in a murder case.
The calm and rational Mr. Li of Qianhu of Jinyiwei hates three things in his life: all injustices in the world; his father who is a seller seeking glory; and his own name - Li Langlang!