When U.S. Marine Gabriel Drummer (Shia LaBeouf) returns home from his tour in Afghanistan, he finds that the place he once called home is no better than the battlefields he fought on overseas. Accompanied by his best friend Devin Roberts (Jai Courtney), a hardnosed marine whose natural instinct is to shoot first and ask questions later, he searches desperately for the whereabouts of his estranged son, Jonathan (Charlie Shotwell) and wife, Natalie (Kate Mara). In their search, the two intercept Charles (Clifton Collins Jr.), a man carrying vital information about the whereabouts of Gabriel's family. As we revisit the past, we are guided in unraveling the puzzle of Gabriel's experience and what will eventually lead us to finding his family.