Invasion America

David Carter thinks he's just an ordinary boy, but nothing could be further from the truth. Revealed to be of royal heritage as the son of an alien prince and a human woman, David is now destined to lead the defense of Earth against hostile conquerors from the distant planet of Tyrus. But this will prove to be no easy task, as the Tyrusians are already here--and have managed to infiltrate the highest echelons of power!