The year is 1965 and America is at war with North Vietnam. Commanding the air cavalry is Lt. Col. Hal Moore (Gibson), a born leader committed to his troops. His target: the la Drang Valley, called "The Valley of Death." As Moore prepares for one of the most violent battles in U.S. history, he delivers a stirring promise to his soldiers and their families: "I will leave no man behind...dead or alive. We will all come home together."