The demon king tells Mingji that he has lost his spiritual power, and that he is afraid that he will not be able to control his anger. Mingji asks him why he did it, and the demon king explains that Mingji lost control of his power when he fell off a cliff. He then found Mingji and made him a potion, which he then used to get Mingji to marry him. The potion is called "treachery poison," and Mingji calls it "straitor poison." Mingji tells him that she is the daughter of a miracle doctor and that her father specializes in saving people by finding the cause of their diseases. She says that if Mingji does not marry her, she will kill him.