The story tells about the Republic of China period, where Su San (Li Jiajia), a witty reporter with an extraordinary sense of smell, and Luo Yin (Yang Yeming), a detective police chief, went through layers of fog and solved a serial murder case in Shanghai. Not only did they uphold social justice, but they also gained love and ultimately redeemed each other. The play is a short play adapted from the original novel of the same name by Arsalan.