Humanity's Second Chance

Humans did not originally evolve on earth.  This is our second home, and second chance for life as the most unique species to ever evolve. Humans are the only known mammals to evolve intelligence in a galaxy dominated by Avianid races, like the dinosaurs that almost succeeded here on earth. Humans have evolved twice now, with the help and coaching of a symbiotic massless race, once called the Teachers, but now known as angels.
Original humans, 200, 000 years ago, were discovered to have a powerful gene for emotions that the Avianid races lack and desperately want.  This gene, when not suppressed by the Teachers, unleashed unexpected psychic powers that changed everything about human life, and could again. When humans were first discovered long ago on a remote world, one Avianid race saw them as a threat to their dominance and committed genocide, but most others saw them as an opportunity to adapt this gene.
After being wiped from existence, human genes were preserved and brought to earth to evolve again in the bodies of the primitive Hominids already living there. On earth, humans have not yet discovered the power their emotions give them, but that day will come soon.