The southern border of Dayin was plagued by miasma and evil spirits, and it was popular among the people to "invite ghost teams" to drive away evil spirits. However, the imperial court secretly set up a "night patrol department" in the state capital to investigate cases of using ghosts to commit crimes and make money through evil spirits. The heroine was born in the lineage of corpse-killing witches, but due to a mysterious case of annihilation of her family when she was young, she was forced to remain anonymous and wander the countryside as a "looker". She met a cold-faced clerk who was ordered to investigate the case during a bride's reappearance case. One of them could see grudges, the other was good at breaking people's hearts. From testing each other to catching ghosts side by side, they uncovered several mysterious cases one after another. Behind all the hauntings, they point to an ancient temple that was sealed fifteen years ago, and the truth behind why the heroine's family was wiped out.
