Willer and Carson are drawn into a great intrigue, connected to the assassination of Abraham Lincoln, the public disclosure of which could lead to major upheavals in the highest circles of government.
Major Granger steals the famous "jewel of Akbar" from the Indian Raja and flees to the USA. On his deathbed, he hands over the jewel to Captain Jones. At the request of New Orleans Sheriff Nat MacKenneth, Tex and Carson try to recover the jewel...
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
Swift Bear, inspired by false visions from the old witch doctor Yanado, rises up against the white Navajo chief. Tex's situation becomes even more difficult when he encounters a corrupt military official who has no interest in resolving the problem peacef