Ling Buyu, the daughter of the great general who protected the country, was framed and executed, and she died unjustly. Due to his overwhelming resentment and lingering spirit, he was hired by the underworld as a trainee underworld agent, responsible for arresting the evil ghosts wandering in the world, and in exchange for merit, he had the opportunity to find out the truth about his own murder. She returns to the human world with a hook in hand, disguises herself during the day, catches ghosts at night, and uses ghostly means to intervene in unsolved cases in the world. While catching ghosts and solving cases one after another, she met Xiao Huaijin, the seventh prince who appeared to be weak but actually held immense power. He was born with yin and yang eyes and was her only "similar" in the human world. From testing each other to joining forces, the two used thunderous means to clear up unjust cases in the world, eliminate traitors in the court, and gradually uncovered the shocking conspiracy that led to the destruction of her family. In the end, Ling Buyu was promoted to the priesthood of the underworld as a mortal soul, and Xiao Huaijin ascended to the Ninth Five-Year Plan. The two joined hands to create a peaceful and prosperous era where humans and ghosts are at peace.
