Chemistry genius Yan Weiming accidentally gained the ability to sense odor molecules with a concentration of one part per trillion due to a "nano gas sensor" accidentally implanted in the laboratory. He is no longer satisfied with the bottles and jars in the laboratory, and instead uses this "olfactory art" to describe the invisible pulse of the city - establishing a "smell fingerprint database" covering the entire city. After meeting Lin Shutong, a calm and wise forensic rookie, the two jointly founded the "Odor Forensic Identification Center". Using rigorous gas chromatography-mass spectrometry technology and Yan Weiming's unique "nose tip insight", they separated the key laundry detergent ingredients from the coffee aroma and locked the suspect's trajectory in the oil smoke heat map. Using gas-sensitive materials as their pens and the law as their ruler, they peeled off cocoons in the smoky urban alleys to solve unsolved cases, promote the birth of the "Odor Evidence Law", and quietly weave a light map that uses invisible traces to identify the world and revolutionize the judiciary.
