Lan Xingran, a policewoman of the Municipal Public Security Bureau, is a capable forensic doctor who secretly controls the city's huge underground gray network. A murder case in an abandoned warehouse kicked off. A mysterious man in black left a verbal warning, but everyone took it out of context and reversed the cause and effect.
The world believes that Lan Xingran is the swordsman of disaster. As long as she wanders between black and white, the long night will swallow up the entire city. Criminal police officer Chen Yan carries the belief of protecting the city and works hard to prevent the predicted disaster. High school student Yao Chenxi holds fragments of the recording of the man in black and sees through the truth, but he keeps his mouth shut and the information in his hand is repeatedly tampered with and used.
In order to avoid the tragedy, the police launched an internal investigation, and the major factions took the opportunity to start a war. All parties continued to block and force Lan Xingran. But the outcome that everyone tried their best to prevent came to an end just as they struggled again and again.
Serial murders follow one after another, ghosts are surging within the police force, and multiple forces are strangled against each other. Well-intentioned obsessions turn into the driving force of destruction. When the truth is revealed layer by layer, everyone has to face a cruel fact: disasters are never caused by one person, but are caused by everyone.
Intent: Obsession and prejudice will create the disasters you fear. Black and white are never either/or. Blindly following rumors and collective fear will lead to destruction. Examining the behavior itself is more important than chasing the expected disaster.