There are six realms in the world, and three realms in the human world. All worlds live in harmony, and the underworld is responsible for solving problems between the two worlds. "Tingyuxuan" is established in the human world that is most connected with each world to maintain order. The fairy world and the devil world assist the underworld and also build A corresponding department was set up to assist the work in the underworld, known as the "Three Listenings in the Human World". For some reason, the son of the underworld came to the human world to experience and was appointed as the master of Tingyuxuan. He met the heroine and experienced and dealt with magical things together. This is where the story begins.