The ugly faces of Helltown, led by the shady don Lopez, must pay dearly for the vile beating inflicted on Tiger Jack! Tex, Kit and Carson entrust their Navajo friend, seriously injured by the tortures he has suffered, to the “doc” of Claypool, a peace-loving town of miners subjected to extortion by the Helltown delinquents. The pards’ plan of revenge, who have taken Claypool’s fate to heart, is simple and merciless: disguised and armed as ferocious Apaches, they carry out a series of guerrilla actions against the criminals, wearing out the villains’ nerves.