Psychological profiler Shen Zhiyao retired for five years, but was pushed back to the center of the storm due to a series of copycat crimes. The old case involves not only the murderer, but also the silent forensic doctor Zhou Xu, the journalist Jiang Chi who manipulates public opinion, the obsessive nurse Chen Yan, and the mentor Su He whom she once deeply believed in. When all the clues point to the same torn diary, she and the bookstore owner Lu Zhaoheng are forced to form an alliance - in the maze of lies, they are not chasing the murderer, but identifying whether each other's scars are worthy of redemption.
