The story takes place on the edge of a modern city. Female detective Lu Xinran enters the shadows of society due to a strange disappearance case. During the investigation, she continued to uncover the gray areas in the cruel reality, facing complicated multi-line cases, intricate interpersonal relationships, and the multiple oppressions of women's existence. Each volume revolves around one or more cases, involving collusion and betrayal, fate and choice, as well as the tearing apart of friendship, family affection, love and even the ideal of justice. In the end, as many mysteries came to light and the core truth that had been hidden for many years emerged, Lu Xinran also achieved inner redemption amidst pain and growth, and promoted the implementation of some institutional justice.
