During the
Beiyang period, north of
Beiping, a young martial artist named Li Tianran witnesses his senior fellow disciple, Zhu Qianlong, colluding with Japanese spy Ichiro Nemoto to massacre their master's entire family. Li narrowly escapes death and is rescued by an American doctor named Hendler. After recovering from his injuries, Li is sent to America, where he studies medicine for years while simultaneously receiving espionage training. In early 1937, Li is suddenly ordered to return to China. On the eve of the
Marco Polo Bridge incident, Beiping is a city crawling with spies from all over the world, a chaotic mix of Chinese and foreigners, rival factions, constant temptations, and lurking dangers. Driven by revenge, Li Tianran has no idea he's being pulled into a grand conspiracy, disrupting a delicate game already in motion. Lan Qingfeng, a mysterious martial artist from the
former dynasty, is closely connected to Zhu Qianlong and Ichiro Nemoto. He also shares a deep brotherly bond with Hendler, but whether he is friend or foe remains a mystery. As tensions between China and Japan escalate, power struggles intensify. Misled by lies and having missed several crucial opportunities, Li Tianran finally makes up his mind to launch a full-scale revenge mission, with the help of a tailor Guan Qiaohong, exposing the truth behind the massacre and the secrets of everyone involved. == Cast ==