Far away behind the hills a girl called Imelda lives beside a fairy forest. Every day she ventures into the forest to play with her fairy friends. But within the deepest, darkest depths of the trees lives the worst creature of all – the goblin king! When he kidnaps the Fairy Queen, the fairies call upon Imelda to help. Soon she has a cunning plan to turn the Goblin King into a worm and rid the forest of him for good!