In appearance, Karag is an ordinary schoolboy. But behind the unremarkable appearance, there is someone unusual. Half human, half cougar - that's who this mystery guy really is. Living among people like him is not always easy. But, fortunately, one day Karag gets the chance to enter a unique educational institution. "Crystal" is a school where teenagers study who can turn into animals. Maybe Karag will finally be able to make friends? However, someone here is already watching him. Who is this? And why is he doing this? And does this mean that Karag will face some very dangerous challenges? “A wonderful, well-written book for teens - witty and exciting.” Süddeutsche Zeitung Bestseller according to the prestigious German magazine Spiegel. The first book in the “Children of the Forest” series.