Chen Jinsheng, a student majoring in western medicine during the period of the Republic of China, helps his senior Master Leng to run Fumo Detective Office, a private detective agency. Liu Yidao, the ace headsman in the past Qing Dynasty, has his family members murdered by his disciple Niu Er. Chen Jinsheng and Master Leng tried to investigate the case through all kinds of traces. However, more mysterious murders are followed, such as the billionaire Tian Buhuan in the northern city, the food dealer Fan Buzhao in the southern city, the Liangs with a high position in the imperial court of the past Qing Dynasty, and many others. Ghost markets? Prisons? Geomancy? The Five Elements? Who is behind it? Revengeful murders? Rivals in love? Love-philters? Venomous poisons? Who is behind everything?
