The fate of the earth rests in the claws of a rogue tangoga--and the heroes Undermountain can't even find him. While the wicked bigfoot leader Hanameesovenama plans First Contact with the human race, Danny and his friends race to stop the vile tangoga boss GorVit from using the star-striker weapon to destroy the Earth. The search leads to an ancient king who may hold the key to preventing the apocalypse. Eric Kent Edstrom brings this YA science fiction trilogy to a breathtaking final act in a book packed with thriller paced plot and characters loved by readers around the world.