For more than three hundred years since the founding of the Great Zhou Dynasty, humans and monsters coexisted, and the Department of Demon Suppression enforced laws and judged crimes.
The first case that the new demon judge Shen Yan took over was that of a fox demon bride who murdered her husband on their wedding night. The groom's chest was broken and his heart was missing. All the evidence pointed to the fox demon. However, as the investigation deepened, Shen Yan discovered that the dead groom had died three years ago.
Relying on the mysterious magic weapon "Zhao Gui Jian" left behind by his father, Shen Yan follows one demon case after another to trace the truth: demons are not necessarily evil, and people are not necessarily good. The most difficult thing to kill in the world is never the demon, but the sin hidden in the human heart and cause and effect.
And all the clues ultimately point to the sealed old case of his father's disappearance twelve years ago.
