When Mark and Heather Smythe saved Earth from the conquest-hungry Kasari Collective, they thought their work was done. But the world's vast new government continued its quest to make extraterrestrial contact. And now, as a new gateway is activated to welcome the Kasari, whom world leaders take to be benefactors, only the Smythes stand a chance of countering their planet's invasion and subjugation by a race of ruthless conquerors. Years after their...