When Buddy the pixie smuggles himself into her backpack after Witch Camp, Grace-Ella lets him stay, even though Mr Whiskins tells her pixies are trouble. She takes him to school – but he soon escapes and causes all kinds of mischief. It's all fun, until searching for Buddy, Grace-Ella sees someone stealing the school's charity fund. Will anyone believe her? With her best friends, a naughty pixie and of course Mr Whiskins by her side, can Grace-Ella save the School Fair?