I started the book knowing I was not truly invested in the story, having just barely finished the preceding book in the series. That said, the action was kept at a decent pace and it kept my attention better than I anticipated.
A ruined earth, years in the future, and only a handful of children can save it. The science is sketchy at best, but is supposed to remain solidly in the realm of technology and not magic. Hope is to cover the holes in the viability of said science.
I still lacked connection to the characters and the writing did not allow me to fully enter the world, and as a suspension of disbelief was sorely needed, it prevented me from at any point truly liking the story.