Corry Ann McFenny is a ten year old girl who lives with her mom and bossy teenage sister Ariana when she discovers a secret journal that holds the key to and exciting journey. After meeting a magical talking to her. Corry Ann journeys through a door to a place called Once Upon A Time. There she discovers that she is a fairytale historian. She must help chronicle fairytale stories into the mysterious journal or the stories will disappear forever. Antonellis tells her about a boy named Jack of Cornwall who needs her help from the mysterious Dark Knight who wants to destroy Once Upon A Time. She also learns that her long lost father was really kidnapped by the Dark Knight. With the help of a mysterious gray wolf named Rufulio she tries to help the creatures of Once Upon A Time chronicle their stories and stay one step ahead of the Dark Knight. She even finds clue that may help find her father. On the journey Corry Ann discovers that not everything is what it seems and friendships are more valuable than gold.