Everyone in Vallen knows that ice wolves and scorch dragons are sworn enemies who live deeply separate lives.

So when twelve-year-old orphan Anders takes one elemental form and his twin sister, Rayna, takes another, he has to question whether they are even related. Still, whether or not they're family, Anders knows that Rayna is his best and only true friend. She's nothing like the brutal, cruel dragons who claimed her as one of their own and stole her away.

In order to rescue her, Anders will have to enlist at the foreboding Ulfar Academy, a school for young wolves that values loyalty to the pack above all else. But for Anders, loyalty is more complicated than blind obedience, and friendship is the most powerful shape-shifting force of all.

New York Times bestselling author Amie Kaufman delivers heart-pounding adventure and breathtaking magical inventions in this unforgettable story about finding one's place in a sharply divided world.