In this prosperous age of the Tang Dynasty, Su Siqian always believed in the principle that bones should not tell, I will speak for them, and was committed to finding out the truth of every case. However, Pei Zhui, the head catcher of Dali Temple, dismissed her. The latter two were ordered to investigate the case. In the process, they fell in love and killed each other, but unexpectedly led to a huge conspiracy.