For Millie it's normal to hear music when it rains and see colours when people speak, but this latest strange behaviour is the final straw for her dad. With work taking him abroad, he has no choice but to send Millie to his old boarding school. Her life is about to get a lot more complicated, when she discovers Excalibur exists outside the pages of myth and legends. She learns that she is the key to stopping Dark forces from destroying magic. But who can she trust, when not everyone is who they seem.