Trapped in a superstore by a series of escalating disasters, including a monster hailstorm and terrifying chemical weapons spill, brothers Dean and Alex learned how to survive and worked together with twelve other kids to build a refuge from the chaos. But then strangers appeared, destroying their fragile peace, and bringing both fresh disaster and a glimmer of hope. Knowing that the chemical weapons saturating the air outside will turn him into a bloodthirsty rage monster, Dean decides to stay in the safety of the store with Astrid and some of the younger kids. But their sanctuary has already been breached once. . . . Meanwhile, Alex, determined to find their parents, heads out into the darkness and devastation with Niko and some others in a recently repaired school bus. If they can get to Denver International Airport, they might be evacuated to safety. But the outside world is even worse than they expected. . . .
This is by far the best book in the series. It is raw, action-packed, and full of tears, heartbreak and kinship.
Niko is someone you can count on, but below the tough-man appearance he has a loving heart. He cares for his young ones, and never complains. I feel that he's just the right guy for Josie and vouched for him from the beginning. However, he is able to put aside his love for Josie temporarily to lead the kids to safety.
Josie is a type O without herself realizing it, but she is different from the other mindless killers as she can control herself from harming the ones she love. Love for a family without blood ties can go beyond value for one's life, as demonstrated by Josie who voluntarily ripped off her gas mask and turned O to save the lives of the ones she love. Now Josie is lost, but Niko swears to bring the rest of the family to safety.
Back in the warehouse, where Dean, Astrid, Chloe (the 3 other O's who were left behind for fear of turning into killers) and the twins were situated, things were not that good with Alex (technical wizard) gone, Jake abandoning them for good, and Astrid pregnant with Jake's child. Dean still loves Astrid, but Astrid seems to have reservations of her feelings towards Dean.
Now the government plans to drop bombs in Monument in order to wipe out MORS-contaminated areas. Will Niko arrive at DIA in time to save the others left behind in Greenway supermarket?
Sky on Fire is just brilliant. I finished it in one sitting.