Thorn is no longer an ordinary girl; she is a powerful half-being - both human and Silverwing. Her flaming red wings are a testament to the betrayal her father once committed in the eyes of the clan. Because of this, Thorn is hunted not only by the clan's leader but also by his son Lucien, to whom she has given her heart. In turn, she has also broken his. Thorn flees to the legendary Glastonbury to harness her powers. And when her family is threatened, she must bring the legacy of light within her to shine in order to win a millennia-old rebellion once and for all.