In the Mirrorheart Shop of Linyuan Town, secrets run deeper than the cracks in its bronze mirrors. With the ancestral Ruins Mirror Jade in hand, Shen Jing can always glimpse fragments from beyond the present in the ancient mirrors he restores: the Void Heaven Terrace entwined with soul lanterns, a black box in the palm of a black-robed figure, and half a silver hairpin peeking from a Soul Guide's sleeve.
When the dark aura of a lingering ancient immortal seeps from beneath Uncle Zhou the Mirror Keeper's gentle facade, and Su Wan's jade flute cannot silence her sister's sobs from within a soul lantern, Shen Jing finally understands. Those disappearances called "sacrifices" are nothing but part of a century-old conspiracy deep within the Mirror Abyss. Visions from the Ruins Realm surge like a tide, immortal palaces and jade towers turning in an instant to broken walls and rubble. The truth of a willing sacrifice lies hidden in his mother's dying words, "Run!" Even his own reflection reveals the outline of an ancient immortal.
The Mirror Pavilion's altered records, the regret-filled illusions of Soulreturn Valley, the three-life trial at Void Heaven Terrace... Shen Jing and Su Wan tread across shattered mirrors, using the Mirror Keeper's bloodline as their guide and the Soul Guide's tears as their medium, cutting through the mist of words woven between reality and illusion. It turns out that protection is not about raising a jade pendant to drive away the darkness. It is about daring to trust, when every mirror is lying, that faint light warmed in your palm by love and responsibility.
In the final moment before the Ruins Realm collapses, they at last understand the truth in the mirror: the most stubborn illusion has never been the falsehoods of the Mirror Abyss, but the past the heart dares not face. And the most steadfast light lies deep within every crack, waiting for someone who refuses to let go to turn it into the road home.