In ancient times, the soul of an evil spirit that had been sealed in a dark dungeon by the late king of the mainland royal family was released, and the heavy responsibility of subduing the evil spirit fell on the late king's surviving son, Ji Che. Hao Che vowed to defend the country to the death, and eventually died together with the evil spirit. However, the evil spirit was not completely eradicated. The evil spirit's clone was perfectly disguised and escaped Hao Che's fatal killing. After Hauche's death, only his only sister A Chongxia was left in the royal family to preside over state affairs. Ah Chongxia has no magic power and relies entirely on the power of her brother's former protector, Shiroro, to rule the country, and the most elite force of the royal family, the Royal Guards, to protect the country's security. The clone of the evil spirit disguised himself as the Night King and ran a geisha court underground in the mainland. The leader of the geisha court - Jade Fairy, charmed the whole city with her stunning beauty. The captain of the Royal Guards and the person admired by the princess A Chongxia, Sowei, has always admired Yuxian and wanted to rescue Yuxian from the Night King.