Jon Voight plays Luke Martin, a Marine sergeant who comes back from Vietnam with both legs paralyzed and faces the many challenges of constructing a liveable life. Jane Fonda is Sally Hyde, the wife of Marine captain Bob Hyde (Bruce Dern), who volunteers at a local vets hospital while her husband is overseas and there meets Luke, whom she had known slightly in high school. Sally gets to understand the plight of disabled vets, and she gets emotionally, and then sexually, involved with Luke.
Bob returns with a minor physical wound, but he has been emotionally traumatized by the war. He agitatedly threatens Luke and Sally with a bayonetted rifle, and Luke leaves Sally to Bob, as he knew he would have to do. Bob is much too distraught to be satisfied with this victory, however, and in a near-final scene, he swims out into the ocean surf to what we understand will be his death.
