Ping is struggling to protect the young dragon Kai from the ruthless enemies that stalk him.Then an old friend sends her a secret map that shows the way to Dragon Haven - and the Dragonkeeper sets out on the most important journey of her life. But when Ping and Kai arrive they are shocked to find that Dragon Haven has been abandoned and only a pile of dragon bones remains. What has happened to the wild creatures that roamed there? The answer comes in the form of a mysterious dragon who holds the key to Kai's future . . .