One day while exploring the local library Ophelia, a girl who loves mystery and adventure, notices a secret locked door with a passcode. When she asked someone about the door they said there's an old tale that there is a secret code hidden within the books. Ophelia’s sense of adventure made her very curious and she decided to look for the secret code. You play as Ophelia trying to find a secret passcode to the door. But she needs to be careful because if the cranky old librarians, who like the library to be nice and quiet, catch Ophelia they might kick her out. She must find the passcode before the library closes.