Táto séria sleduje dobrodružstvá očarujúcej čarodejnice, ktorá sa snaží prispôsobiť modernému svetu. Hoci jej magické schopnosti nie sú už tak uznávané ako kedysi, stále nachádza spôsoby, ako do života ostatných vniesť trochu mágie a prekvapenia. S humorom a srdcom skúma témy priateľstva, prijatia a hľadania svojho miesta vo svete, čo z nej robí ideálne čítanie pre mladých čitateľov hľadajúcich veselé a čarovné príbehy.
Grunhilda inherits her famous ancestors' recipes and cauldron, but no one believes in magic anymore. She delights in scaring the kids until she meets a timid little girl named Madison, who becomes an unlikely friend. Madison needs help at school and at home. Will this girl be able to thaw the Lunch Witch's icy heart?
Grunhilda the Witch has a weakness...a tiny soft spot on her black and crusty heart. She continues to hide the nice feelings she has when she gets a letter from former Salem Elementary student Madison. But she can’t keep up the ruse for long because her familiars are onto her...and so are her ancestors! The familiars search her hovel and find her collection of letters from Madison. Mr. Williams has a solution, but it involves making a meanness potion from the book that IS-NOT-TO-BE-USED-BY-ANYONE-OTHER-THAN WITCHES (ESPECIALLY-NOT-WITCHES’-PETS). But anything that can go wrong does when he accidentally mixes up a positivity potion instead...and it starts to affect everyone in town. Birds are singing. Flowers are growing. The principal cancels school! Grunhilda hurries to mix up a potion to fix the town, her familiars, and her own black crusty heart before the positivity succeeds in making everything bright and cheerful.