U.S. Navy SEAL Chris Kyle is sent to Iraq with only one mission: to protect his brothers-in-arms. His pinpoint accuracy and courageous exploits earn him the nickname "Legend." However, his reputation is also growing behind enemy lines, putting a price on his head and making him a prime target of insurgents. He is also facing a different kind of battle on the home front: striving to be a good husband and father from halfway around the world. Despite the danger, as well as the toll on his family, Chris serves through four harrowing tours of duty in Iraq, personifying the spirit of the SEAL creed to "leave no one behind". But upon returning to his family, Chris finds that it is the war he can’t leave behind.