Bob Lee Swagger (Mark Wahlberg), a sniper who served in the U.S. military for many years and has performed exceptionally well on the battlefield, fundamentally dislikes living a life constantly accompanied by cold firearms. After persisting until his retirement, Swagger moved with his beloved girlfriend and faithful dog to a remote part of Arkansas, starting the peaceful life he had longed for. However, Swagger's happy and tranquil life did not last long before it was ruthlessly shattered. A former superior of Swagger arrived with a team, hoping that he would lend a hand based on his years of sniping experience, providing covert protection for the president during a street speech. This was because ** authorities had previously received information indicating that there might be terrorists or assassins planning an attack, posing a threat to the president’s safety. Being kind-hearted and honest, Swagger couldn't resist his superior's persuasion and agreed to take on the mission. On the day of the president's speech, Swagger was stationed in a building across from the podium, keeping watch. Suddenly, a gunshot rang out, and one of the president's bodyguards fell to the ground. As Swagger was about to grab his gun to catch the shooter, a police officer suddenly burst into the room, pointing a gun at him and demanding that Swagger surrender his weapon. Confused, Swagger was unjustly wanted as a suspect in the assassination attempt on the president. Fortunately, with his agile skills, Swagger managed to escape after being shot and falling out of the window. After careful reflection, Swagger realized that he had been framed as a scapegoat from the very beginning. Determined to clear his name, Swagger embarked on a relentless pursuit to track down the real culprit and vindicate himself...