The rainy night is the best cover for sin and the perfect stage for the judge.
Lin Yu Qiye is the youngest sketch professor at Zhongdu Art College during the day, and his fingertips are stained with charcoal and oil paint; at night, he is the anonymous owner of the "QY Puppet Shop", and what he carves in his hands is blood-soaked locust wood and the lingering souls of the dead. As the last descendant of the ancient Yanshu, he can use spiritual silk as eyes to see the "aura" of despair remaining at crime scenes.
When the law is silent in front of the powerful, and when justice drowns in the sound of rain, he chooses to become the ruler in the darkness. A "judgment puppet" corresponding to the evil soul was born in his hands. In reality, the murderers who are on the loose will always use the tragedy predicted by the puppet on a night of heavy rain.