Set in a dystopian future, all adults have fled to the mainland. Two sisters will battle for survival and fight to find a safe haven.

A father grieves for his deceased daughter and meets an old friend of hers.

Lyra is an orphan who lives in a parallel universe in which science, theology, and magic are intertwined. Her search for a kidnapped friend uncovers a sinister plot involving stolen children and turns into a quest to understand a mysterious phenomenon called Dust. She is later joined on her journey by Will, a boy who possesses a knife that can cut windows between worlds. As she learns the truth about her parents and her prophesied destiny, the two young people are caught up in a war against celestial powers that ranges across many worlds.