Allies - Kaylid Chronicles, #4

Having a dragon walk out of a portal changed everything. When a member of the Drakyn race, the ones the Elentrin want to destroy, shows up to offer aid in Earth's fight for survival, McKenna has hope. Their visitor unlocks information buried in her friends' heads and gives them a chance against this enemy. Calling in the government seems like the best idea, after all it's a worldwide battle.  The Drakyn don't have weapons, ships, or even troops to help in this war.
What they do offer is a way onto the ships hanging over Earth. The catch is McKenna and her friends are the only ones who can lead the way. That information they were given can't be shared in the time they have available. Because not only are more Elentrin coming, but when they are done, they'll destroy the Earth with asteroids. The window is running out to save the captured shifters on the ships above and convince the Elentrin to leave before Earth is reduced to rubble. Can they pull of a miracle, or will everyone die no matter what they do?