Shadows of Bloodshed — Dan Decker

More than a thousand years after humankind had been brought to the brink of extinction by an alien race known as the Hunwei, when most thought the Hunwei to be a myth, Adar believed that the Hunwei would return and resume the fight. Adar and his reluctant son Jorad continued to search for a way to defend their people. This time, without the technology of their fathers, there will be nothing standing between them and the entire capture or destruction of the human race.