Bruce Boxleitner plays a second-rate Rambo in the action film Diplomatic Immunity. Boxleitner is grizzled and tight-lipped Vietnam veteran and U.S. Marine instructor Cole Hickel. When his daughter Ellen (Sharon L. Case) begins to date Paraguayan nationalist Klaus Hermann (Tom Breznahan), Cole looks askance at the couple. His suspicions prove correct when Ellen is murdered by Klaus, who uses her body as a subject for his sado-masochistic paintings. The police arrest Klaus but, because of his aristocratic descent, the government refuses to bring him to trial. Cole takes the law into his own hands and, with arms-dealer pal Cowboy (Billy Drago), Cole heads back into Paraguay as a one-man army to exact vengeance upon Klaus and any other Paraguayan who stands in his way.