The three realms of cultivation are divided into three realms: the fairy realm respects the law of heaven, the demon realm loves killing, the demon realm is cursed by heaven, and the catastrophe of gods and demons continues to reincarnate for thousands of years. Meng Shuyu (zi Li), possessing the Xuanbing spirit body and the nine-tailed fox bloodline, is the last orphan of Qingqiu, and is also the "variable" appointed by heaven - her appearance is destined to cause the pool of rebirth to dry up and the order of the three realms to collapse. In order to find the "Xuanbing Talisman" left behind by her mother clan and find out the truth about the Jiazi massacre of the Hu clan, she brought the ice spirit root into the Nine Heavens Immortal League and emerged with the dual skills of Talisman Array, but she was trapped in the sect's conspiracy: Danxiu Liu Ruyan was framed by jealousy and faked the illusion of "killing the clan"; the swordsmanship brothers were trapped in the "immortal demon" Only the sect master Yun Wuya treated her like a girl, and Master Hanshuang secretly protected her. The cold swordsman Ling Yue shook her Taoist heart - he cut off the Nightmare Demon's forged Heart-Questing Mirror, slit her wrists and fed her blood to resist the demonic poison, and bluntly said "The way of swordsmanship is only to break the rules of heaven that imprison you." Ten years later, the war between gods and demons broke out, and the Demon Abyss Lord Nightmare led his army to conquer the world. Meng Shuyu burned her nine tails and spirit body, and set up a "Xuan Ice Sealing Formation" to seal the Demon Abyss, and her own soul dispersed into white snow in the sky. Ling Yue has since traveled through the three worlds for thousands of years wearing the meteor sword, clutching the ice crystal flower she left behind in the palm of her hand, walking alone on the never-ending soul-searching road - the coldest thing in this world is the human heart, and the warmest thing is the obsession that you know cannot be done, and this snow is the last tenderness she left to the three worlds, and it is also his eternal unsolvable fate.