During the Shaoxi period of the Southern Song Dynasty, Su Wanqing, the proprietress of the "Drunken Beauty" rouge shop in Lin'an Rouge Lane, relied on her keen perception of spices to discover the key clue to a murder case - the unique scent of Western Region rouge on the deceased. Lu Jingchen, the newly appointed official of Lin'an Prefecture, was having a headache about the case. After hearing Su Wanqing's discovery, he invited her to help investigate the case. Starting from the rouge fragrance, the two solved many urban murder cases one after another, revealing the criminal network hidden in the rouge fragrance.
