 Ten years after the end of the war in Vietnam, four ex-Marines decide to return to S.E. Asia to investigate reports of American POWs still being held there. These four include Roger, whose daughter s just been married, the unemployed Frank, Mark, who s quit his job at an Arizona roadside tavern, and Richard, recently a patient at a mental hospital. In the jungles of S.E. Asia they discover American POWs but also find out about a U.S. Government plot to keep this knowledge a secret.