After a bad asthma attack Maddie spends the summer holidays at her grandparents' house. As usual, her mother is very overprotective, so Maddie is thrilled to meet Poppy, a flower fairy, out in the woods. Poppy only has one wing so she can't fly, but soon she and Maddie are having lots of fun together. When Poppy's best fairy friends Primrose and Daisy disappear, Maddie and Poppy set off into the woods to track them down. But book fairies, dream fairies, and tooth fairies have mysteriously vanished too—and Maddy soon finds herself on an exciting and daring rescue mission!
