**Synopsis:** Lin Yan (played by Zhou Huilin), a seasoned sniper trainer, has two exceptional students: Han Guang (played by Fu Chengpeng) and Cai Xiaochun (played by Sun Sun). They are both brothers-in-arms and rivals, each vying for the affection of army doctor Zhao Baihe (played by Yang Shuo). During a mission, Cai Xiaochun is dismissed from the army for disciplinary reasons. He leaves with Zhao Baihe, who later hears he's become a mercenary abroad. Five years later, Han Guang, now a decorated sniper, is reassigned to the coast. His signature rifle goes missing, and Zhao Baihe is killed with it, making Han Guang the prime suspect. Meanwhile, Cai Xiaochun resurfaces, hired by the notorious He Shihong (played by Ning Xiaozhi) to assassinate offshore tycoon He Shichang (played by Zhao Zhiang). The former comrades and brothers are set for a deadly showdown.