When seventeen year old Liv Larson and her brother are sent to separate foster homes, she gives up on her old life and her faith in God. The only bright spot in Liv’s new life is her energetic and obnoxious foster-sister, Riley. When Riley convinces her to come to the rooftop party to view Icarus, the up-coming solar flare, Liv meets Zander. For the first time in months her troubles take a back seat...that is until what should have been a small flare, erupts into a full blown solar storm. Now, Liv and her rag-tag group of not-quite friends must find a way to survive the sweltering heat, lingering radiation, and the mysterious virus that appears to have found an ideal host among their ranks.
Alliances will be formed, and battle lines will be drawn as Liv and her new friends set out on a perilous journey to save their loved ones, find answers, and reach salvation. But, something sinister awaits them in the dark—and it’s undeniably connected to Liv. Will Liv be able to keep her promise and reunite with her brother? Will the group's brave determination be enough to save them all from a rogue government, a terrifying virus, and the things that go bump in the night…Or was Icarus the KILLSHOT?