Ye Zhiwei, a female detective in Shendu, is born with the ability to touch objects and sense "blood marks". When the "Flying Robbery" case reached a deadlock, she used the "Golden Scissors Technique" inherited from her family to detect the subtle blood marks left at the scene, and unexpectedly revealed the lost "Secret Technique of Different Blood". In order to prevent the murderer from mass-producing "different blood people" to cause trouble in the world, she needs to build ironclad evidence with the "blood map" and convince Dali Temple with the "principle of inheritance of different blood". Faced with doubts and the old system, Ye Zhiwei worked step by step and joined hands with the cold-faced young minister Su Yanqing to solve strange cases and clarify the ethics of different blood. At the same time, he promoted "different blood forensics" into the law, using blood as ink to re-weave the legal network under the towering city of God.
