Beneath the bustle of modern Chang'an lies a conspiracy a thousand years in the making. While cleaning a Warring States bronze mirror, cultural relic restorer Shen Yanzhi awakens his family's Nine Abyss Eyes and is swept into the conflicts surrounding the Mirror Abyss secret realm. His golden left eye lets him see demons, but also uncovers the truth behind his grandfather's faked death twenty years ago. His grandfather did it to stop Jing Wushang, lord of the Mirror Abyss, from opening the secret realm with the Heaven-Peering Treasure Mirror. Now Shen Yanzhi has become Jing Wushang's sworn enemy.
A blood-red moon hangs over Chang'an, and nine altars awaken. Jing Wushang commands demons such as the Bronze Mysterious Bird, hoping to use Chang'an as a sacrifice to unleash the secret realm's power. Aided by his grandfather's lingering spirit and a mysterious woman in white, Shen Yanzhi takes a runed scabbard and ventures deep into the Mirror Abyss. Using the power of his Nine Abyss Eyes and bloodline, he breaks through rune mazes and defeats guardian beasts, only to discover that he himself is the key to opening the secret realm.
The altars are destroyed, and Jing Wushang's plot seems thwarted. But a black hole appears in the secret realm, heralding the awakening of ancient demons. With Chang'an on the brink of ruin, can Shen Yanzhi unravel the mysteries of the Nine Abyss Eyes and restore the Heaven-Peering Treasure Mirror to change his fate? The final battle, with the survival of humanity at stake, is about to begin.
