Thousands of years ago, the demon world coexisted with humans and the fairy world. For thousands of years, the King of the Immortal Realm has been ruling humans and the demon world, banishing the demon world to the most marginal, cold and barren land in the world to thrive. All the demon queens in the demon world have a common use, to assassinate the king of the fairy world, but no one succeeded, and every time they were bloodbathed and wiped out. Therefore, the fairy world ordered that the most beautiful princess of each dynasty must marry the fairy king as his concubine on the full moon after her 16th birthday, but she cannot have children, so that the fairy world can rule the demon world from generation to generation. During the 1999th reincarnation, the demon national master divined that Bai Jiongling, the tenth princess of the 1999th dynasty demon queen Bai Meiniang, was the bitter star of Yu Xuanyuan, the 2999th dynasty immortal king in the immortal world. The demon world finally has hope of reincarnation. So, after Bai Jiongling's 16th birthday, according to the spell of the fairy world, she dressed in white and walked alone on the tidal road of 9,900 miles to marry in the fairy world. This begins a battle between fairies and monsters and a sadistic love affair.