Song Zheng, a wandering soul from the underworld, returned to Yang by mistake and woke up in the body of a silly Song family girl. It happened that Song Zian, the brother of Si Zhu Chunyin and the new magistrate of Wutong County, disappeared mysteriously. She was enlightened by the City God, received the Netherworld Mirror and the Soul-Retaining Card, and became a messenger in the world, replacing her elder brother. Frequent phenomena and unjust cases occurred in Wutong County. The prefect of Jiangzhou colluded with evil cultivators to harm the people and block the chaos. Song Zheng joined hands with his partners to detect many mysterious cases through yin and yang, uncovered local evil gentry, and gradually exposed the conspiracy between the government and evil cultivators. She broke into the illusion in the painting to rescue her brother and the fifth princess, overthrew corrupt officials, awakened the Song family's destiny to defend the formation, faced the crisis of the Nine Nether Vientiane Formation, and embarked on an adventure to protect the world and trace the secrets of the formation's eyes.
