Reborn as Princess Xiaoyao, forensic scientist Zhu Yu seeks only peace after her previous life was consumed by relentless work. Instead of rest, she encounters sinister mysteries: vengeful spirits at the Ghost Temple, corpses hidden in the embroidery tower, villages destroyed by dark forces, court conspiracies threatening the throne. Reluctantly applying her forensic mastery, Zhu Yu examines bodies and bones, deciphering truth in death. She counters every conspiracy with calculated strategy and clever leverage, systematically dismantling opponents' plans. Murder, mystery, and intrigue shadow her—yet Zhu Yu remains determined to master lazy nobility while exposing every hidden truth. Her dedication to justice matches her commitment to finally achieving peace.