Lyra want's to get Bon Bon a present but doesn't know what to get her until she got the idea that she would make Bon Bon a stuffed doll of her self and she want's to infuse the doll with a spell that makes it so she can take the place of the doll but since things never go how you want them to Lyra becomes one with the doll where the doll is permanatly in love with Bon Bon and will do anything to be with her. So someone has to stop the Lyra doll and get the real Lyra back.