Arkansas Joe asks Tex and Carson for help to track down and capture the dangerous Executioner Gang... One of those cutthroats killed Gil Sands, a former ranger who was hunting them... In addition to the Executioner, the gang includes the two lethal Derry brothers, the ferocious choctaw Mezzo Scalpo and the cowboy Charlie Goode, an old pupil of Gunny Bill... At the Sands Ranch, Tex tells Kit Carson and Arkansas Joe about his past and the adventures that involved him, his old master Gunny Bill and the horse thief Charlie Goode... The latter, still a bird of the woods, is in Mexico together with the Executioner's gang... But across the border another threat awaits the three rangers on a special mission... Arkansas Joe recalls the battle of Cerro Gordo where he was with his brotherly friend Gil Sands while the Lipan Apaches of the cruel Baishan are on the warpath... They are hunting the same prey as three Texas Rangers on a special mission south of the Rio Grande: the Executioner and his gang! And at the moment in which the tracks of Tex Willer and Kit Carson, followed by Joe, divide, Charlie Goode arrives in the quiet and remote village east of the San Juan river called Golconda... But, with him, tranquility is numbered! Tex now has Charlie Goode in his grasp, but what is behind the blood trail that leads the Hangman's Gang to Mexico?... A secret is hidden in Monterrey to get to the treasure of the "King Cobra", but, in addition to the Hangman, Half Scalpo and their gunslingers, the enraged Lipan Apaches of Baishan are also besieging the city... While Tex still pretends to be an outlaw to extract information from Charlie Goode, the Lipan Apaches of Baishan, allied with the savage warriors of Lunito, besiege Monterrey, where a city firefight also breaks out... Two Rangers on a special mission, Kit Carson and Arkansas Joe, face off against the numerous thugs of the Executioner's gang!
