A mysterious voice calls to best friends Thomasina and Anne, drawing them into the dangerous world of Guaire magic and a destiny that threatens their bond. Obsessed by family legend, Thomasina's Aunt Morven believes she is destined to become the Storm Prince, a transformation requiring control over wild magic and dominion over all magical beings. However, the wild magic proves unpredictable, its enchantments taking hold of Thomasina and jeopardizing the very friendship that connects the girls. The narrative unfolds through a third-person perspective, focusing on the girls' struggle against external magical forces and internal conflict.

The premise sets up a classic fantasy conflict where personal ambition clashes with the natural order and the bonds of friendship. The narrative appears to focus on the internal struggles of the protagonists as they navigate the dangers of wild magic and the external pressures exerted by Aunt Morven's quest for power. The story's structure suggests a focus on character development and the exploration of magical systems, likely appealing to readers who enjoy coming-of-age stories intertwined with magical elements. The potential for dramatic tension arises from the unpredictable nature of the magic and its impact on the protagonists' relationship.