When Emily Vole inherits an abandoned shop, she discovers a magical world she never knew existed. And a fairy-hating witch, a mischievous set of golden keys, and a train full of brightly colored bunnies are just a few of the surprises that come with it.

With the help of a talking cat called Fidget and a grumpy fairy detective called Buster, it is up to Emily to save the fairies and get to the bottom of Operation Bunny.