In Suzhou of the Republic of China, three members of the rice businessman Qian Wansan's family were murdered in mysterious circumstances, with only one person's finger left amputated at the scene. When the patrol officers were helpless, Shen Zhiwei, a reclusive widow, was forced to take action. With the unique sensitivity of a woman, she peeled off the cocoons from the accounts and bloodstains, only to find that the deceased actually involved the prominent families in the city and their family secrets. When the fig leaf of the powerful is lifted, can this "red-makeup detective" who is good at using logic maintain the last line of defense for the truth in troubled times?