In the fourth year of the Tang Dynasty, Luoyang. Dali Temple Judge Li Zhiyang, known as the "Iron Judge", has handled 170 cases in three years without any mistakes.
The old scholar Bai Chongyi "committed suicide out of fear of crime" in prison, but there were two marks on his neck - a rope and a fingerprint. The three locks on the cell door were intact.
The clue points to a volume of demonic book "Xuan Zhu Lu" that is neither paper nor silk. The person who reported the loss of this item two years ago was the barefoot boy Shen Qiye, the owner of the mysterious Hu Shangzi.
After the curfew, Li Zhiyang went to "Huan Zhenfang" alone. The dark purple light seeping out of the door condensed into human and animal shapes, silently whispering: "Shen Qiye, hand over that lamp."
Time freezes. A pair of giant gray-white hands stretched out from the darkness and reached for Shen Qiye's throat - exactly the same as the hand that strangled Bai Chongyi.
Li Zhiyang took a step in the frozen time and broke off a nail on both hands.
A shrill scream exploded, and the true form was revealed: entangled roots, a short sword engraved with ancient inscriptions, and a quietly burning green lamp.
It turns out that there are some cases that Dali Temple cannot adjudicate, and there are some truths that the law cannot cover. And that lamp has already taken away a five-year-old child...
Iron Judge Li Zhiyang × mysterious boy Shen Qiye, a suspenseful and strange journey between Luoyang in the Tang Dynasty and another world.