The Rainbow Magic series is a beloved collection of books that follows the adventures of two best friends, Rachel and Kirsty, as they help different groups of fairies retrieve their magical objects. Each book focuses on a specific fairy, such as the Weather Fairies, the Jewel Fairies, or the Pet Fairies. With over 200 books in the series, young readers can explore a vast and colorful world of fairies, friendship, and adventure.