In the midst of a field trip to Washington, DC in the year 2099, 16-year-old Luna Sanchez's world is rocked when aliens arrive on Earth. Stranded with her classmates in the wilderness following a bizarre bus collision, Luna's life takes another unexpected turn when a pint-sized time traveler named Michael emerges from the chaos. As the alien invasion escalates, Luna crosses paths with Emrys Morrow, a 15-year-old with potential to thwart the extraterrestrial menace. Can Luna and Emrys rally to fend off humanity's gravest peril? This is the first book in the Timeline of Earth's Future series, which will consist of Invasion, The Stranding and the Return.