The film tells the story of sniper Jin Tai who accidentally killed his master Jin Ming during a mission, and then silently left the agent organization and lived a decadent life until he met the rebellious teenager Xiaofeng and his mother Li Shanji, and then he regained his confidence. However, as fate would have it, Xiaofeng was targeted by an illegal gang because of his special blood type. In order to save Xiaofeng, Jin Tai once again picked up the sniper rifle and fought a desperate battle with the illegal organization, and in the process of rescuing Xiaofeng, he settled the grudges and hatreds from many years ago.