In order to avoid a "blind date" with Yunlong, the crown prince of the Dragon Clan, Xue Ji descended to earth alone when she was nine thousand years old, and met the Dragon Clan demon Zimei by chance in Netherworld Mountain. The two people with similar personalities soon fell in love with each other. Due to Mei's love, the wedding was brought forward, and Zimei and Xueji made an appointment to elope, crossing the Immortal Sea in the Valley of the Underworld, and resurrecting mortals. However, Yunlong discovered it, and used a stratagem to alienate her. He turned into Xueji and knocked Zimei down to the Valley of the Underworld. He burned off an arm and burned the soul to sleep. In order to save Zimei, Xueji swore in the temple that she would never fall in love with her again, in exchange for Zimei's sobriety and arm. But it left a deep misunderstanding...