The dark night in the city seems to be covered with a thick fog. Su Rui and Bai Yan work together to investigate the serial tragedies. After psychological counselor Song Yichen and reporter Lu Xinyi join in, the fate of the four people is intertwined with many puzzles, uncovering the unknown secrets behind each victim. Multiple groups of cases are implicated in each other, and the cold truth directly strikes at the darkness at the bottom of society and the good and evil in people's hearts. The main line runs through an unsolved case that has been unsolved for ten years. Each volume unfolds independently and has its own traction. Together with the branch lines - such as the victim's family, missing persons and media tracking - weave together a true and delicate portrait of urban crime. In the process of tracing the truth, the main female characters not only grow and transform, but also bravely face pain and reconcile themselves, showing the diverse strength of contemporary women.
