Treasure of the Gold Dragon

In the 12th book of this fantasy series, Maldred is after the powerful Gold Key! Drake and Rori travel to the lair of the Gold Dragon to help protect the key. There, they meet a new Dragon Master named Darma. If dark wizard Maldred gets his hands on the Gold Key, he will be one-step closer to controlling a powerful Earthquake Dragon. Can the Dragon Masters stop him before it's too late?