On a rainy night in the Shanghai French Concession, a bloody cheongsam suddenly appeared in the medicine cabinet of Yongshou Hall. Lin Yansheng, a female pharmacist who returned from studying abroad, has not yet shaken off her reputation, but she is involved in the bizarre death of the third leader of the Qing Gang. The fragments of the medicine note hidden in the silver needle aroused the murderous intention of the young gangster Gu Shiqin, but on her neck he saw the same plum blossom mark as the one in the family murder case twenty years ago. When the Western scalpel cuts open the corpse, in the poisonous net intertwined with arsenic and crane red, the bloody prescription is slowly emerging...
