If there is one thing you can say with absolute certainty, it's that ten-year-old Faith Smyth is no hero. Her father is a brain-surgeon, her mother is a kick-boxer, her sister is a beauty queen and her little brother is a chess champion, but all Faith is good at is forgetting her P.E. kit. Which makes it all the more remarkable that she alone has been chosen to save the mythical world from its certain doom. A mystery informer is planning to expose famous folkloric characters as charlatans who actually have very normal lifestyles, beset with petty concerns and insecurities, just like the rest of us. He has stolen a pile of correspondence from various well-known mythical characters and he intends to send it all to the newspapers in exchange for a giant chocolate cake and a dancing penguin. Faith intercepts the letters and reluctantly sets about returning them to their senders.

But as she encounters assorted perils along her journey, Faith beings to discover an inner strength she never knew she had. As her adventure progresses, it becomes apparent that she is not the ordinary little girl she thought she was.