Un infame ricatto

A stagecoach races through the trails of Arizona, escorted by numerous armed men. Some Apaches are kept chained in the carriage and must be taken to the city to undergo a quick trial and end up with a soapy rope around their necks. The Red Indians, in fact, are accused of the massacre of miners which took place in San Cristobal, a massacre which appears to have been perpetrated by the men of what is portrayed as a ruthless leader, Taiga. It is precisely the latter who, with a clever deception, manages to free the prisoners while avoiding bloodshed. Behind his plan is the mind of Tex, determined to rehabilitate Taiga and his men, taking the weight of an unjust accusation off their shoulders. The group headed by the brave warrior promised General Crook that they would no longer take up arms against the white man, and an Apache's promise is sacred! Tex must reach Safford to try to unmask the instigators of the San Cristobal mine massacre. Meanwhile, the perpetrators of the brutal massacre, the bandits led by Frank Harrigan, who have taken refuge in a small hidden valley, hold Carson prisoner. Tex will have to free his pard, escape from Harrigan's henchmen and manage to return to the city in time to ruin and make public the shady plots of Emmerich, one of the richest businessmen and landowners in the whole of Arizona.