边城月明，侠影独行。体育老师拉着我做了一节课

　　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.