Kirsty Tate and Rachel Walker are volunteering at the Wild Woods Nature Reserve, where they’re loving every moment spent with baby animals and their new friends, the Animal Rescue Fairies. But when Jack Frost plots to fill his own icy zoo with those youngsters, he makes off with the fairies’ magical key rings—threatening to lock the little creatures away forever. Now Rachel and Kirsty must track down the stolen keys and free the animals before the Ice Lord’s zoo becomes their prison!