Billions of people died during the Long Winter, and the survivors settled in refugee camps. Emma Matthews and James Sinclair, like the others, hope that life will return to normal, but continue to watch the skies in disbelief. When NASA discovers that hundreds of asteroids are heading towards Earth, James instantly realizes the truth: danger has returned and they must fight in space and on earth. Just when it seems all hope is lost, James discovers a possible key to survival. But to save humanity and their family from a new deadly threat, he and Emma will have to take huge risks. One thing is certain: their plan will change the future of the human race forever.