The Island always wins… Skandar and his sister Kenna are finally both at the Eyrie, but tensions are high. To survive their third year of training, Skandar and his friends must complete a series of terrifying trials across the Island's elemental zones. Friendships, allegiances and rider-unicorn bonds will be pushed to the limit - only the strongest will make it. Meanwhile Kenna's forged bond to a wild unicorn has left her alienated and alone. And when a terrible discovery puts the future of the Island in peril, all fingers point in one direction . . . As dark forces assemble, Skandar must decide how far is he willing to go - for Kenna, and for the Eyrie. Get ready for unlikely heroes, elemental magic, sky battles, ancient secrets and ferocious unicorns in this highly anticipated adventure that will keep you reading after lights out!