The Dragon's Egg, The Terrestria Chronicles #5

Princess Gilda and Prince Selwyn refuse a gift forbidden by King Emmanuel, but Prince Josiah accepts, not realizing that his actions will impact the Castle of Faith. At first, it seems that the young prince is able to conceal his act of treachery. For a time all is well, but then a Cararian Greatwing, the fiercest of dragons, begins terrorizing the kingdom. Josiah learns too late that he is powerless to control the beast that he has unleashed upon Terrestria. The Dragon's Egg challenges you to guard your heart for the King. Recommended for ages 10 and up.