Criminal Profiler.

Faced with the grief of his Master's death, painter Cheng Ren took a picture left by the Master and embarked on a journey searching for the truth. The truth has long been buried by history, but for the life of the living and the death of the dead, Cheng Ren broke through numerous obstacles. The six cases contained in it seem to be independent, but under the investigation, the cases are inextricably linked.