While the entire world watches the largest meteor shower in 10,000 years, a rogue asteroid, hidden by the meteor field, smashes into the moon in a tremendous explosion of rock and debris. The world's leading scientists, including Alex Kittner, Maddie Rhodes and Roland Emerson, begin piecing together evidence that suggests the moon's properties, and its orbit, may have been permanently altered. Alex, Maddie, Roland and the rest of their team soon discover something far worse - the moon has entered a new orbit and has been put on a collision course with Earth!