A note from his blood brother Winnetou calls Old Shatterhand to the desolate Llano Estacado. The Comanche are on the warpath and with hundreds of warriors plan to attack Bloody Fox' secret oasis hideaway in the desert. During his ride Old Shatterhand crosses paths with Old Wabble, the legendary 'king of the cowboys' and together they rescue Old Surehand from the clutches of the enemy Indians. Old Shatterhand realises that Old Surehand is at the centre of a desperate secret when he has an eerie encounter with an insane squaw in Kaam-Kulano. The adventure turns complicated when a detachment of mounted white soldiers becomes involved, but together Winnetou, Old Shatterhand, Old Surehand, and Bloody Fox repel the Comanche attack by cunning and subterfuge. When the cactus trap falls shut behind the enemy Indians, a new friend joins them-Apanatshka, a mysterious Comanche chief; but the other companion, Old Wabble, turns from friend to foe when a scoundrel known as the 'general' appears in the oasis.

Winnetou and Old Shatterhand separated from Old Surehand and Apanatshka when the 'general' and Old Wabble stole their precious weapons, the silver rifle, the Henry rifle and the bear killer. In the meantime, Old Surehand is on a mission of his own; when Shatterhand visits banker Wallace in Jefferson City, he learns that his new friend is on his way to the Rocky Mountains. The blood brothers also head for the Rockies in pursuit of villains and robbers. Winnetou and Old Shatterhand ride with Dick Hammerdull and Pitt Holbers, the robbers' victims, as well as detective Treskow, who has unfinished business with a dangerous villain. While spying on enemy Osage Indians, Old Shatterhand saves Apanatshka from certain death. The mystery surrounding Old Surehand deepens when another enigmatic and elusive red Indian, Kolma Putshi, becomes involved in the pursuit. As the drama nears its end at Devils Head, the 'general' is unmasked.

While trying to catch up to Old Surehand, Old Shatterhand and his friends make the acquaintance of yet another mysterious Indian, the fabled and elusive Kolma Putshi. Is he somehow connected to Old Surehand, the 'General', Apanatshka, and the insane woman from the Valley of the Rabbits? We find out as all of these characters meet and interact several times along the storyline. After failed assassination attempts, several rescues from certain death, a 'Cyclops fight', bear hunts, and lots of 'sneaking up on people', the story culminates at the Lake of Green Water and the Devil's Head, where the 'General' is unmasked and the mystery surrounding Old Surehand is finally revealed.

Sporočilo od krvnega brata Vinetouja kliče Old Shatterhanda v puščavo Llano Estacado. Komanči so na bojni poti in bojevniki želijo napasti skrivno oazo Bloody Foxa. Na ježi se Old Shatterhand sreča z Old Wabbleom in skupaj rešita Old Surehanda iz rok Indijancev. Pozneje se začne počasi razkrivati skrivnost, ki jo nosi s seboj Old Surehand. Obeta se zapletena pustolovščina!