Mara the meerkat fairy is in terrible trouble. Jack Frost has stolen her magical key ring, which helps her protect all meerkats. Mara goes to find Rachel Walker and Kirsty Tate at the Wild Woods Nature Reserve, where they're spending a week as junior rangers. She desperately needs their help. Can the girls help their fairy friend outwit the Ice Lord, find the magical key ring and save the baby meerkat captured by the goblins?