Flora the Fairy enjoys school. But one day, her teacher tells them they will be tested on their magic skills the next day. They have to change the class dragon, Smoky, into something else, and back again. All the children start practising but, try as she might, Flora can't remember the words of the spell. She keeps getting it wrong! Even her friend Harry can do it right – what will Flora's mummy and daddy say when she doesn't pass the test?