Is it possible that a fleet of aliens belonging to a superior civilization came from intergalactic space and colonized our planet in the last pre-glacial age? Many cosmogonic myths in various parts of the planet seem to support this possibility. The issue is the theme of this novel and one that sheds new light on the "dark years" of our pre-history. The text invites the reader to discover a pre-history that, while unknown in classic texts, is present in many cosmogonic myths. It presents far from easily understood subjects - cosmology, astrology, medicine, genetics, and physics - in clear and accessible language, accompanying the reader on a journey of exploration into those "dark years." The novel is the result of years of analysis of cosmogonic myths whose detailed descriptions and precise allusions record facts and events experienced by primeval man between eighty to fifty thousand years ago. The narrator, the wise Miscuati, explains the determining role played by Collective Memory as the true engine of our progress and development, emphasizing the key role played by a knowledge of the past in the genesis of present and future behavior and solutions, and the importance of "respect for others" and "individual freedom" as essential conditions for the growth of a group and its affirmation.