The Sons of Horus, the Comancheros, the Egyptian gods - all of them will stand in Tex's way to prevent him from rescuing Don Octavio's kidnapped children. Morisco also has an unsettled score with the Sons of Horus, fanatics from Egypt, so he will join Tex
Zagor against Governor Sombra, the scientist Coronado and their mercenaries who kidnapped a Hopi shaman and his daughter to take them to the treasure hidden in the mythical Seven Cities of Cibola...
Robert Gray returns after many years to take revenge on all those who cost him his military career. Just like last time, Zagor stands in his way; and he is once again the only one who will be able to stop the Alchemist's bloody and vengeful campaign!