On the night when Pei Zhao, the bloodline leader of Xuanying Sitie, was ordered by the emperor to kill the master of Tingyu Pavilion, he found that the opponent was actually the young man who escaped from his sword ten years ago. The ordnance case brought out the old grudges of the extermination of the family, and the disaster relief food was hidden in the border killing bureau. When the thin blade reflects the moonlight, one of them is investigating the case while holding a stick in the open fire, and the other is making plans in the dark night while listening to the rain, and finally bring innocence to this decadent dynasty.