The story takes place in 1948, when a key member of the Special Investigation Bureau, Yu Beiping (played by Chen Jianbin), is transferred to Qingcheng by his superiors to investigate the murder case that occurred there. However, in reality, Yu Beiping's true identity is being investigated and suspected by his superiors, and he is constantly in danger. In Qingcheng, Yu Beiping met a man named Lin
The story takes place in 1948, when a key member of the Special Investigation Bureau, Yu Beiping (played by Chen Jianbin), is transferred to Qingcheng by his superiors to investigate the murder case that occurred there. However, in reality, Yu Beiping's true identity is being investigated and suspected by his superiors, and he is constantly in danger. In Qingcheng, Yu Beiping met a man named Lin