They can't stop what's coming.

Wingless sprite Asher Songfeather is adjusting to life in the Bat Colony. To atone for his role in the recent poisoning, he frees a Dragonfly slave girl and vows to reunite her with her sister. But her sister has joined forces with rebel leader Ryn.

Halfwing Siobhan Eirwensa is struggling to reconcile the past with her newfound loyalties. When she learns her father is fighting for his life as a captive of the Arena, she is determined to rescue him. But she has much to learn about trust.

As Asher and Siobhan work toward solutions, they uncover Ryn's newest plan--one that will lead to full-blown civil war if he isn't stopped. They're running out of time.

And beneath it all lurks an unforeseen threat that will shatter life as they know it.