At a frozen pool in the northern frontier, young Lin Hanye nets a sword case forged from mystic iron one night and awakens Xuanyuan, the foremost of the Nine Sword Souls. From then on, he is drawn into a shocking conspiracy that has been unfolding for three hundred years.
He discovers that the world he lives in is merely a reflection within the "Taixu Mirror." The real world was overrun by demons long ago. Before they fell, the nine Sword Sovereigns used a forbidden technique to copy the soul imprints of living beings and create this mirrored world as a spark to keep civilization alive. But the mirror world is on the verge of shattering, with only a year left.
To save the billions of living beings in both worlds, Lin Hanye sets out to gather all nine Sword Souls. He meets Su Yingxue, heir to Moonlight, and Jin Xiaoyu, Host of the Tideborn Soul. Together, they fight the demon reflection known as the "Inspector," who seeks to devour the Sword Souls and open a passage between worlds. Lin Hanye also discovers that behind the so-called "salvation plan" lie the Sword Sovereigns' ambiguous final wishes, and their betrayal.
From the mortal world to the Nine Heavens, from the mirror world to reality, from protecting others with his sword to letting go of his obsessions. Lin Hanye ultimately understands that the true Way lies not in wiping out every demon, but in accepting both light and darkness; true eternity lies not in transcending dimensions, but in protecting those by his side.
This is an epic tale of swords and souls, and a journey toward enlightenment through existence, choice, and love.
