The Broken Scale.

A world filled with war, Chaos and destruction, A world filled with dragons. When Hayden sets out to become a Metallic Dragon Rider he discovers that his dreams are far from reality as he gets ready for the Trials that stand between him and a dragon egg. The Trials test Hayden in every way but he finds that it is what happens after the Trials that he could not have prepared for. War breaks out as the dwarves and their red dragons descend upon Celestial City, home of the Metallic Riders. Hayden and his friends find themselves at the center of the maelstrom and all of Arvain is resting on what they choose to do next.