Something is coming from deep space. Big enough to destroy the entire solar system. And it's heading straight for Earth. That's what Dr. Ben Rollins, head of Harvard's exoplanet research team, is told after being dragged out of bed in the middle of the night. His first instinct is to call his daughter, Jessica, who's vacationing in Italy with his wife: Something is coming, he tells them, a hundred times the mass of the sun. We can't see it, we don't know what it is, but it's there. They're calling it the Nomad and it's coming fast. In just months, the Earth may be destroyed.