在边城的夜幕下，蒙面侠无声无息地守护着这片土地。退休的老王肉玲玲

　　A down-on-his-luck ex-GI finds himself framed for an armored car robbery. When he's finally released for lack of evidence--after having been beaten up and tortured by the police--he sets out to discover who set him up, and why. The trail leads him into Mexico and a web of hired killers and corrupt cops.