Tex and Shorty ride into Cinco Valley, a gold rich area terrorized by marauders ostensibly lead by one Pablo. Tex, however, recognizes Blackie, whose boss is Bannister, an American. Suspecting that Bannister and his henchmen are trying to drive the settlers off their potentially valuable land by posing as Mexican banditos, Tex convinces Pablo to help him set a trap for the marauders.

Tex Ritter arrive au Crane's ranch alors que Blackie et Pete s'apprêtent à l'incendier. Il les chasse, mais il est accusé d'être de connivence avec Pablo, un bandit notoire sur qui retombent tous les mauvais coups perpétrés sur le territoire. Reconnaissant Blackie comme un des tueurs de Bannister, Tex commence à se douter de l'innocence de Pablo.