Fire World (The Last Dragon Chronicles 6)

 In a world between Earth and Kilmer, called Co:pern:ica, lives a twelve-year-old boy named David. He and his friend Rosanna spend their days in the librarian, a museum for books, with the curator, Mr. Henry, and the mysterious firebirds that roam the upper levels. When the two friends accidentally injure one of the firebirds, David and Rosanna find themselves on a remarkable and angerous adventure. The evil Ix have found a way to Copernican from their home planet and have taken over a firebird, turning it to the side of darkness. The birds have a secret, though: They know about the existence of dragons. With the help of David and Rosanna, the firebirds must reach across the universe to call on the dragons for protection. But will the dragons arrive before the Ix destroy everything.