In this, the second book of the Two Graces series, Grace's cousin Leo comes to stay for a few weeks. During this time, Grace, Leo and the twins formed their own modern day version of the Fearless Four. By chance, they discovered that the school bully had put together a devious plan to wreck the nativity play and the Fearless Four decided to intervene.... Leo went back home for Christmas and this coincided with Grace and Pop enjoying the Santa Special, another train trip which was pulled by the Prince of Iceland. However, the story that Grace heard this time was not what she was expecting.... but it was just a thrilling as before.