A flying horse who can't fly. A magical threat hiding in plain sight. Rebecca's peaceful night is shattered by the arrival of Thunderbolt--a winged foal born into trouble. When he loses his ability to fly, Rebecca uncovers a tangled mess of magical interference, jealousy, and silent enemies watching from the shadows. As fairy politics clash with human life, Rebecca must once again walk the line between two worlds--and keep a very special foal out of danger. Magic, mystery, and mischief return in this enchanting tale of friendship and courage.