After discovering that she was a stardust spirit, Lucy has spent a magical year with her new stardust friends Allegra, Faye and Ella flying through the woods at night-time using their magic powers to save animals and the environment.
It's now Autumn and Lucy's powers have become stronger than anyone could imagine - she can do things that even adult stardust spirits struggle too. But even though, Lucy is delighted with her new powers and loves showing them off, her friends are a little upset.
So when Lucy gets trapped in the woods by a dark spirit, who wants to steal her stardust, and therefore also her powers she wishes she had listened to her friends much more! But friendship even more powerful than the strongest magic and working together the girls manage to defeat the dark spirit for good.