In the thirteenth year of Yuande in the Northern Tang Dynasty, the eldest son of the Tantai family, Dan Taifeng, was robbed while transporting escorts. His employer indiscriminately reported him to the government. The second young son, Tantai Mu, found out the truth and cleared the grievances for his brother. In the process of clearing his grievances, he accidentally got involved in the grudges between the Tantai family and the Ning family many years ago...