Upon her fifteenth birthday, Cassandra endures yet another of her aunt's "Birthday Trials," putting to test the skills she's practised over the past year. With her command of Elemental Ice and her knowledge of Enchants and Potions, she battles against nature itself to earn her "Birthday Presents." The day's trials done, Cassandra is exhausted-but another threat looms. Throughout her trial, someone has been watching from the shadows-someone who has so far evaded even her aunt's attempts at detection...