The theme of the second season is "Color Development". It not only tells the story of the genius simulation portrait artist Shen Yi (played by Tan Jianci) who encounters the confusion between career choice and personal pursuit in the process of exploring the map of human nature, but also innovatively perfectly combines art and investigation to show the detection process of the case. It also focuses on exploring the causes behind the crime, exploring the subtleties of human nature and the realistic power of caring for society.