Set during the Republican era, forensic bone examiner Master Cao and his apprentice Zheng Yu are invited to examine remains for the Wang family. However, they are framed and drawn into a mysterious and bloody case.In order to clear their names and seek justice, the master and apprentice embark on a path of retaliation, gradually uncovering a heartbreaking tragedy shaped by the times.(Source: Chinese = Tencent || Translation = MyDramaList)