The rainy season in Yingtian City is always covered with blood that cannot be washed away - the embroiderer was decapitated in the secret room, and the wound was as smooth as cut paper; the ginseng soaked in the tribute wine actually contained poisonous needles; behind the curtain of the shadow puppet show, the heads of the spectators fell to the ground together with the shadow puppets. Former Jin Yiwei Shen Yanqiu lost his official position due to being framed, and now makes a living by helping people write petitions in a teahouse, but he accidentally stumbles upon this bizarre murder case. Su Wan, the owner of the rouge shop at "Ningxiang Pavilion" in the south of the city, seems to only know how to mix fragrance and powder, but in fact he has family medical knowledge and can find flaws in rouge debris and wound texture. One was armed with a knife to hide his sharp edge, and the other was holding a spoon to detect strange poisons. The two were forced to team up to investigate the case, but found that all the dead were related to a dusty "Cinnabar Case" ten years ago. When the cold light of the embroidered spring knife meets the dark fragrance of the rouge box, will the truth surface first, or will they become the next targets to be hunted down first?
