Outlanders: Tigers of Heaven (Outlanders)

The atomic megacull exiled humanity to the world of their birth and delivered the power of life and death to the hands of an elite few. It is a power measured in blood - those who shed it and those willing to spill it. What remains of America is ruled by emissaries of a conspiracy that has damned mankind throughout history. But this oligarchy is weakening, divided by internal conflict and the unbreakable will of a group of outcasts, fighting for humanity's freedom...

Torn between swearing allegiance to the mysterious imperator and maintaining control of their individual territories, the barons are vulnerable. Imprisoned in Cobalt's Area 51 stronghold, Kane, once a soldier of the ruling elite, is aided by rebel forces who fear future genocide for both human and hybrid alike. As the baronies factionalize, Kane and his compatriots must choose sides in a war that is about to shift the paradigm of power, and deal human destiny a terrifying new twist... (The Imperator Wars - Book 2)

On the brink of doom, they have nothing to lose... and everything to fight for.