In Mexico, Longarm has no jurisdiction, no authority—and no rules getting in his way!
When three Gatling guns are hijacked on their way to Fort Saber, the Army suspects a bronco band of Yaqui Indians from south of the Rio Grande. Teaming up with his old pal Lee Suggs, Longarm is sent across the border to locate the stolen guns, and dole out a little “unofficial justice.”
 
But in Mexico, the Yaqui are only one breed of outlaw. Even with the help of their beautiful Mexican guide, Longarm and Suggs come up against the meanest banditos north or south of the border.  That includes the savages who stole the Gatling guns—and know how to use them…