When schoolteacher Kieran Johnson discovers that his father was not a French sailor (as he had been led to believe) but rather an Irish farmer, he looks to his mother for answers. When she refuses to provide any, Kieran travels to Ireland.
As U.S. troops storm the beaches of Normandy, three brothers lie dead on the battlefield, with a fourth trapped behind enemy lines. Ranger captain John Miller and seven men are tasked with penetrating German-held territory and bringing the boy home.