In a fictional divine dynasty, immortal sects reign high above the clouds, looking down upon all living beings. Ye Nanchuan, a low-ranking female constable in the Divine Constabulary, is in charge of wrongful cases that no one cares about. She appears cold-hearted and self-serving, but secretly carries a deep blood feud over the massacre of the Qinghe Ye Clan by the immortal sects years ago. Extremely suspicious by nature, she never trusts anyone's kindness. While investigating a bizarre case involving the disappearance of children, Ye Nanchuan is dragged into a mirror illusion by a Nine-Tailed Fox Demon disguised as a loving mother and is left on the brink of death. At the moment of despair, the inherited jade pendant on her chest shatters, awakening the Sin Karma Scales System. One side of the scales can measure the sins of demons and evil beings, while the other can forcibly seize their supernatural abilities and turn them into divine punishment skills.