Wendy loves all things cat-related. So when Wendy spots a cat charm necklace at a craft booth, she's thrilled--a perfect addition to her collection! But Mrs. Bast, the eccentric old woman who owns the booth, is pretty reluctant to sell. She warns Wendy that it's not just any charm--it's a werecat charm. And it's dangerous. Of course, Wendy pays no attention to that warning, and manages to get the charm anyway. She can't believe her luck. Until she starts to change...