Joey Green wants to stand out - he wants to be the best at something. He plays the guitar, but only when no one is listening. And no one knows that he wants to be in a band - no one except the birds and the the old kangaroo that live on the hill at the back of his house. When Joey goes up there he can be anything he likes.
But when he finds someone has built a treehouse in an old peppercorn tree on the hill, he’s not very happy. Who could this intruder be? And why is she so strange and unfriendly and full of secrets?
Joey has a mystery to solve, and a plan to solve it. And some unexpected discoveries to make.
