Back home, Tommy tries to fill his brother's shoes — helping Sam’s wife Grace (Natalie Portman) with their two young daughters and repairs around the house. Slowly, he becomes the father figure the family needs.
A Marine presumed dead returns from Afghanistan to find his ne’er-do-well brother has stepped into his role as husband and father — only to discover the true battle lies within.
But Sam isn’t dead. He survives brutal captivity, witnessing a fellow soldier executed — an act he feels powerless to stop. Rescued and returned home months later, Sam is a ghost of himself: volatile, distant, and consumed with guilt and rage. He misinterprets Tommy’s closeness with Grace as betrayal.