Lily Halfmoon has a secret. She's a witch! With her animal guardian and her powerful magic gemstone, she and her friends help protect the town of Piedraville from all kinds of dangers.

It's almost Samhain, when magic is at its strongest, and witches from all over the world are gathering at Lily's school. There will be a meeting of The Witches' Council, but there will also be plenty of fun activities like magic demonstrations, kelpie taming and flying races.

But Lily is in trouble. A mysterious person is after her rare moonstone, and if they get their hands on it, it could threaten everything Lily holds dear. Will Lily have the strength to fight for what she believes?