Xiao Hong was born with yin-yang eyes. From childhood, she studied both Buddhism and Taoism under her grandmother and could see things ordinary people could not. During her time at the police academy, she cracked one bizarre case after another. After graduating, she was exceptionally promoted to lead a city's criminal investigation unit for supernatural cases. On her very first day, she encountered an "impossible" case: in a theater abandoned for thirty years, a woman in opera costume had died suddenly with a smile on her face. No one had entered according to the surveillance footage, yet the theater was packed with "spectators" listening to the performance.
She is the youngest unit leader in the city, and the only police officer who can see things that "shouldn't exist." Her colleagues don't believe her, her superiors wait and see, and the only one on her side is Shen Yebai, a fortune-teller who talks nonsense nonstop. He keeps telling her, "The ghosts decide how this case goes."
As the investigation deepens, Xiao Hong discovers that this seemingly isolated, bizarre murder is only the tip of the iceberg. An opera performer brutally killed thirty years ago, a drop of blood in an unidentified woman's corpse, an influencer driven to death by online doxxing, a ghost gun that moves by itself, and a "corpse-haunted place" trapping the lives of 48 people: every strange case points to a shocking conspiracy. Someone has secretly established an "Underworld Court" between the living world and the realm of the dead, using money and power to alter the Book of Life and Death, turning the lives of the living into toll money for the dead.
As ghostly claims intertwine with human testimony and the boundary between the living and the dead is shattered, Xiao Hong must use her own eyes to see through the ghosts lurking in people's hearts and find the mastermind hiding behind a "copy of the Book of Life and Death."
She doesn't believe in ghosts, but the ghosts believe in her.
She refuses to accept fate, but fate has already been rewritten because of her.