Retired Marine Sharpshooter Jim (Liam Neeson) owns a ranch on the Arizona border. Jim, who lives a solitary life, witnessed 11-year-old boy Miguel and his mother Rosa being hunted down by Mexican drug dealers one day. After a fierce gun battle, the dying Rosa entrusted Miguel to Jim. Jim decided to take Miguel across half of the United States to Chicago to reunite with her family, and the two also established an extraordinary friendship. However, facing the relentless pursuit of drug dealers and killers, Jim will use the combat skills he learned in the Marine Corps along the way to start a life-and-death battle with these killers, and swear to escort Miguel home safely...