When tough, no-nonsense L.A. cop Shotgun Jones' prostitute sister is sadistically murdered by one of her johns, Jones swears vengeance. But his aggressive, renegade actions get him kicked off the force. Without back-up, Jones traces the evidence to a small town in Mexico, a looming fortress where money and drugs rule. The closer he gets to the killer, the deeper the danger gets. With machine guns blazing, Shotgun Jones wages a one-man battle against the drug cartel in the ultimate showdown for justice.