Jao

Conquered by the Jao twenty years ago, the Earth is shackled under alien tyranny - and threatened by the even more dangerous Ekhat, one of whose genocidal extermination fleets is coming to the solar system. The only chance for human survival is in the hands of an unusual pair of allies: a young Jao prince, newly arrived to Terra to assume his duties, and a young human woman brought up amongst the Jao occupiers. But, as their tentative alliance takes shape, they are under pressure from all sides.

Humanity is first subjugated by haughty alien colonizers calling themselves the Jao when Earth is unexpectedly attacked by the implacable and nearly-unstoppable Ekhat, exterminators of all intelligent life not their own. Now the fragile Human-Jao alliance is put to the test. A devastating encounter with the Ekhat in a distant nebula reveals a powerful alien society that may hold the key to defeating the Ekhat once and for all. There’s one big problem: they utterly loathe humanity's ally, the Jao.