

When Mark wakes up, he and Alec trek back to their settlement.

He slips into a memory about the first day of the solar flares and how he and Trina navigated the subway tunnels together to find a way out. The pilot crashes the airship, and Mark hits his head. Once onboard the flying ship, they discover medical boxes containing a highly contagious virus. Mark and Alec manage to escape the chaos and follow the Berg, eventually overpowering its guards. When people are hit, they immediately fall unconscious. Mark realizes they’re shooting some kind of darts. Doors open and men with guns and medical suits start shooting at the people in the mountain community.

A Berg, a kind of airship, flies over the camp. One day, as the group prepares to forage for food, they hear the sound of engines overhead, something they hadn’t heard in more than a year. They meet other survivors and start a community in the wilderness. Members of this ragtag band eventually make their way to the mountains. Mark and Trina join with Alec (a former soldier), Lana (a woman he used to work with) and several other teenagers as a way to protect themselves. Those that survive the initial wave of destruction from the intense heat and radiation have to fight other survivors for food. Sixteen-year-old Mark is riding the subway home from school with his neighbor Trina when the flares strike. The entire world has been decimated by solar flares. As Teresa contemplates the sacrifice she, Thomas and her friends are making in order to help the human race survive, the story shifts to 13 years earlier. They are volunteers for WICKED - a government agency dedicated to finding a cure for the Flare, a disease that is ravaging humankind. The story opens with a girl named Teresa watching her friend Thomas undergo a surgery that will wipe away any memory of her and the work they’ve done together.
