Sam is a family man who is about to embark on his fourth tour of duty. His brother, Tommy, however, is the black sheep of the family and a drifter just out of jail. When Sam's Black Hawk helicopter is shot down in the mountains of Afghanistan, this steadfast marine is presumed dead. This places Tommy in the position to be responsible of Sam's wife, Grace, and two young daughters, which leads to an unexpected attraction between Tommy and Grace.While the two are still dealing with the intricate situation, Sam returns home. Carrying the heavy weight of post traumatic stress disorder, he starts suspecting that something happened between his wife and brother when he was away.