On the day of Su Tang's death, the whole city beat gongs and fired cannons. She thought it was to see her off - but later she found out that it was a celebration gift after the sacrifice was successful. Now she is walking back on the road to death, and the first person to go to the funeral parlor is Jiang Yubai, the forensic doctor, because he is the only one who remembers her last words before her death: "There is a pinhole behind my ear." The two of them jointly investigated and found that behind every lively accidental death in the city, there stood a smiling charity host Zhong Ziyan. And the old woman Feng Guilan who was guarding the mass grave had been waiting for Su Tang to come to her for a long time.
