Fourteen year-old Ray Winters has three rules for surviving alone in New York City:

1. Don’t think about your parents.
2. Don’t trust strangers.
3. Don’t let your shelter collapse more than six times a day.

She breaks all three when four weirdly confident teenagers show up in her alley, call her a morph, and whisk her away to a world of winged dogs, teleporting tornadoes, and islands under glowing stars. On Tidefall Island, Ray learns that she’s a rare shapeshifter with the power to become almost any animal- if she can figure out how to stop crash-landing and falling off cliffs first. But the more she trains, the more questions pile up: Why do the others flinch whenever she mentions her parents? What really happened in the war between the morphs and their terrifying enemies Lunareth? And why does Ray have the feeling like someone out there wants her powers specifically?