Because her parents were killed by the prince Mobai, the girl Chujiu, driven by a thirst for revenge, gets a chance to assassinate Mobai. However, she encounters Zhong Kui, who is investigating demonic energy, and they become acquainted. The two travel together between the spirit realm and the human world, pursuing clues. Along the way, they experience both conflicts and moments of understanding. After a fierce battle, they defeat Mobai, only to discover that a greater conspiracy is about to overturn the human world.