The Undivided Galaxy: Book One of the Divinity Saga

They are proud. They are respected. Yet they are still divided. And there is an old adage.no matter how strong you are, you'll eventually run into someone stronger. Now the Humans face an extragalactic threat on a scale they are not prepared to deal with. They must race against time to unite the Milky Way galaxy and to elevate the younger, less advanced species that inhabit it before the oncoming storm annihilates them all.