In the past 19 years, Feng Bao has repeatedly sent men to the Capital to search for the whereabouts of the Dayintuya. They barged into Prince Rui’s mansion to find out that the late emperor had bestowed the Dayintuya to General Pei Zhang. As Jinyiwei guards, Long Yao and Li Yu, arrived for the rescue, they executed Feng Bao's men. However, General Pei Zhang’s son, Wang Su, killed Li Yu out of anger and staged his death. Constable Shi Jingyao is then commissioned by Magistrate Liu to investigate Li Yu’s death.