Nancheng, which has been ranked as the "Safe City" for seven consecutive years, was torn apart by a sudden dismemberment case - a black plastic bag in the reeds of the moat contained the mutilated body of a female and a half-soaked movie ticket. It also contained strange traces of sandalwood essential oil and unknown plant spores. Criminal investigation captain Lu Chenzhou was ordered to face the danger and had to knock on the door of the old house in the west of the city to look for the perfumer Su Yanci who had not been involved in the police for many years. One uses his "eyes" to see through the logic of a crime, and the other relies on his "smell" to capture hidden clues. When cold criminal investigation methods meet the ultimate sensory talent, they not only have to track down the real murderer in the rainy and foggy Nancheng, but also face the undercurrent of people's hearts that emerges when the truth is revealed. There are no ghosts and gods at work, only the evil hidden in the fragrance and blood, and the two lonely souls testing each other and pursuing the murder side by side.
