When Erah was very young, she decided to leave the city she was born in to start a new life in the grand city Dephia. She decides to work as a servant girl at the castle, but what she doesn't realize is that this castle is no ordinary castle. Something is lurking in the depths that only Erah can sense. With the help of the mischievous Prince Allan and the beautiful Princess Adelena, Erah must find the great evil and will either save or doom the world. The only real question is: Can she do it?