In the silly, gross award-winning children's book, Cat's Fur, we met Carmina. Carmina is a witch who loves to do all the witchy things. Only there's one problem! Carmina the Witch is allergic to cat fur. Heavens! Witches are supposed to be surrounded by cats. Carmina's allergies leave her bed-ridden. What is she to do? Find out in this charming follow-up sequel when Carmina's cat Castor fixes all that ails her.