Legendary sniper Zuo Yingjie became famous in one battle and repeatedly performed extraordinary feats, but was framed and wrongfully imprisoned. While in prison, he unexpectedly received a top-secret mission from the glamorous female agent Shen Xue - to assassinate Japanese bacterial warfare expert Kitano Seicho. Zuo Yingjie was ordered to be in danger, but was betrayed by a traitor unexpectedly. He was ambushed by his old enemy on the battlefield, the Japanese ace sniper Shimokawa Kunimasa, and was put in danger. A shocking conspiracy gradually emerged. The country hates the family, they meet on a narrow road, and the ultimate showdown is about to begin...