[System + transmigrate into a book + real and fake heiresses + crime solving]
Lu Yiyun, the youngest genius woman to lead a criminal investigation team, dies unexpectedly on a mission and is forcibly bound to a System. She is reborn as the fake heiress doomed to be a disposable extra in a novel with a twisted worldview. From the start, the real heiress frames her, pinning a murder on her and getting her sent to a psychiatric hospital. Meanwhile, the real heiress watches from the sidelines, eager to torment her to death.
What is she supposed to do? This lousy System doesn't seem to be much help. Sigh, she'll just have to rely on herself.
After finally escaping the psychiatric hospital, she opens an online detective agency, hoping to squeeze some value out of the useless System. But someone keeps dragging her into solving cases. She has to run herself ragged chasing major crimes and keep an eye out for the real heiress's sneak attacks.
She will make sure that murderous real heiress gets the punishment she deserves! She'll bring some peace and quiet back to the world!
