A few years ago, a police officer was killed because of a young artist named Shen Yi. The artist had only drawn a portrait of the man who was the target of the criminals. To make amends for his past mistakes, Shen Yi leaves the Academy of Fine Arts and joins the Beijing Public Security Bureau as a portrait artist. However, he faces resistance from others. He is assigned to investigate cases alongside Captain Du Cheng, a close friend of the murdered police officer.