In the neon-lit city of Shanghai, two "aesthetic murder cases" occurred one after another. The victim is frozen in a strange posture, with paintings of gloomy style and delicate brushwork placed next to him, like an invitation to death. When the police station was helpless, Su Yan, a specially hired sketch artist, was ordered to take over the task. She has an unusual ability - when drawing a portrait of a suspect, she can briefly enter the criminal psychology of the suspect and capture the most secret features.
Su Yan relied on his ability to outline the vague outline of the murderer, and formed a partnership with Lu Shiyan, a traceology expert known for his rigor. The two followed each other step by step from clues at the scene and Su Yan's "psychological portrait", and gradually targeted the high-profile artist Shen Zhiyuan. However, as the investigation deepened, Su Yan was horrified to find that the murderer was not only imitating her painting style, but also seemed to be leading her towards a carefully woven psychological trap...