Pony Express

Tex and Carson pay Larousse and Milton the bill at a restaurant in New Orleans. Then, tailing the henchmen of the deceased scoundrels, they track down Tabor, the treacherous relative of the Dawsons, whom he kidnapped to get Lafitte's map. The treasure, however, will remain untouched! Meanwhile, in Abilene, the slimy big man Rod Sharon teams up with the Burden gang to plunder Sam Burke's gold mine and undermine his beautiful daughter Cora. It will be the pards, despite the ambushes, who will make Justice triumph. Months later, a handful of robbers attack a stagecoach on which Kit Willer is travelling...

The terrible Mephisto returns to terrorize Kit Willer and Tiger Jack... the doubt that the dangerous enemy is still alive forces the four pards to get on his trail! Thanks to the care of the Tibetan monk Padma, in fact, he has returned from the kingdom of the dead and, under the guise of Doctor Fiesmot, the sinister Mephisto has settled in Golconda, awaiting his revenge...