After Shangguan Yuhe, the female emperor of Great Xia, lost her virginity to the male protagonist Su Yun, she was abducted by the demon emperor. She imprisoned the demon emperor for many years and had sex with her. After three years of pregnancy, she gave birth to a child with the head of a human and the body of an animal. After being suppressed by the Nine Holy Lands, the Demon King hid with his son and often practiced dual cultivation with his half-orc son. He was found by the male protagonist Su Yun 300 years later.