At eighteen, Lin Zhiyi was brought from a mountain Taoist temple to the wealthy Lin family, becoming the “real heiress” who had been missing for years. Waiting for her were Lin Qingyue, the fake heiress who had taken her place, and the cold disdain of the entire family. They thought she was a country bumpkin who needed to be “reformed,” never realizing she was an ace investigator with the country’s secret agency, the Special Investigation Bureau, codenamed “Guixu.” While the wealthy family was still caught up in petty rivalries for affection, she was already carrying a compass and delving into one bizarre criminal case after another. Until one day, the immensely powerful heir to the Gu family cornered her against a wall, eyes red, and asked, “Was the little girl who saved me in Kunlun all those years ago you?”