I am reading a book called "Heather The Violet Fairy". Two girls whose names are Rachel Walker and Kirsty Tate promised the queen fairy that they would find all seven rainbow fairies and return them to Fairyland. Heather is the seventh rainbow fairy. The seven rainbow sisters are Ruby the red fairy, Amber the orange fairy, Sunny the yellow fairy, Fern the green fairy, Sky the blue fairy, Inky the indigo fairy, and Heather the violet fairy. All of the sisters have to be brought to the pot at the end of the rainbow in order to be returned to Fairyland. The evil Jack Frost and his winter goblins try to stop Rachel and Kirsty from returning the seven fairies to Fairyland. He is the one who sent them out of Fairyland because they forgot to invite him to a royal ball.