What if humanity was not the work of a creator God, but of aliens who manipulated our genes?

What would happen if we knew that their descendants remain until today in human-like beings, but belonging to that race? The Sumerian tablets found in different archaeological sites have been distributed in libraries, museums and archives throughout the entire planet, to hide a truth that is both strange and terrifying. If it were true that they descended to Earth to improve humanity, now they seem to have changed their minds.