Hajin was just an ordinary girl who was excited about starting her college life. But her dream is shattered when she gets into a car accident. The next thing she knew, she was Matilda Howard living in a fantasy world! Not only that, but she also realizes she has a secret ability; she can turn people's memories into a book! Although she never intended to reveal her ability to anyone, she decides to help beloved King Daden, who suffers from insomnia. That is when Hajin finds out about the dark past Daden has been hiding from everyone...