The "Great Plan for Humanity" is the first volume of the trilogy "Cosmic Heirs," which runs in an alternate future and tells the adventures of the hero Marko Mont'Sartre, an officer of the Brazilian Air Force who finds himself involved in a plot of unimaginable proportions, on discovering that he was himself, one of the first human of the new humanity that would succeed Homo Sapiens, a result of the genetic manipulation carried out by alien beings in the primitive primates that existed here two hundred and fifty thousand years ago. True castaways in our Solar System, refugees from a war of extermination in their own galactic sector that destroyed their civilization and unable to establish a viable colony here due to the reduced number of survivors, the aliens decided to accelerate the development of the Earth's native hominids by creating a race Hybrid with their own species, patiently waiting, even after the extinction of their original physical bodies, for natural evolution to reach a point where the resulting species was ready to take its place among the stars, receiving the incredible technological legacy of those alien beings. Surfing in the midst of the evolutionary wave that would close the Homo Sapiens chapter on Earth and begin the reign of Homo Superior in the stars, fighting against the threat of almost global domination of ISIS religious fanatics, the protagonist Marko is recognized by artificial intelligence who succeeded their ancient masters as their legitimate heir and deserving of ancestral knowledge, beginning a desperate search around the Earth to find other equally gifted young people to compose the first nucleus of the New Humanity, apt to receive and administer the immense legacy of the ancients...