The Rio Grande was streaked with blood when Walt Slade rode into the territory. El Paso, Juarez, Clint -- all three towns were red-hot with killing, rustling, robbing, and arson. Could Slade's big Colts put an end to it before the powder keg blew up? Slap leather with the Texas Ranger known as El Halcón as a vicious outlaw gang leads him down a trail of violence and into a blazing countdown on six-gun justice.