A modern forensic expert transmigrates into the body of a princess living deep within the palace. Faced with one poison plot after another, she uses blunt modern science to tear away the veil of conspiracy. When the General of Zhenbei's blade and the princess's silver needles point to the truth, a regicide case buried for twenty years, falsified military reports, and poisoned tribute goods all reveal the naked fangs of lust for power in broad daylight.
