Zuo Yingjie, a decorated sniper, is put in prison by a false accusation, where he receives a top-secret mission from a female agent Shen Xue of assassinating a Japanese bacteriologist Kitano Seichyo. But a traitor sells him out, leaving him in grave danger against his mortal enemy Shitagawa...
The film is set against the backdrop of the Great Victory of Pingxingguan, and tells the story of Zheng Zhong, a cryptographer who was surrounded and hunted down by the Japanese for his crucial role in turning the tide of war.
