The most dangerous boy in the world? Timothy is a freak, a weakling, an impossibility. He's the only person in existence without magical powers and has spent his entire life hidden on a remote island. When Timothy is finally taken back to the city of this birth, he is fascinated by the current of magic that fuels the world, and mesmerized by the buildings and orbs that hang weightlessly in the sky. But he is also marked for death. Assassins are watching his every move, and the government wants him destroyed. Timothy can't imagine what threat he could possible pose; after all, he wields no power in this world. Or does he?

After learning how his powerlessness can be used as a weapon in the world of magic and defeating Nicodemus' plan to overthrow the government, Timothy travels to a war-torn dimension to help the Wurm, fierce magicians and warriors descended from an ancient dragon race. But while covertly gathering information on the age-old feud between the Wurm and the Parliament of Mages. Timothy discovers a very different story—one of peaceful Wurms and a conspiracy led by the Parliament of Mages. But that's not the only problem on Timothy's hands. The mysterious girl he spotted in SkyHaven is the granddaughter of Nicodemus, and she's challenging Leander's right to be Grandmaster of the Order of Alhazred. And despite Nicodemus' death, mages are still disappearing . . . and this time someone is painting Timothy as the villain.

The battle for control over the Order of Alhazred mounts as Nicodemus' only heir, Cassandra, is challenged over her right to be grandmaster. But then Timothy discovers that the evil ancient sorceror, Alhazred is still alive - and has gathered nearly enough dark power to take back control of his order. Timothy and Cassandra must become reluctant allies in their battle to stop Alhazred regaining power. But are they strong enough to fight his magic?

Is This The End? Timothy and Cassandra may have beaten the evil sorcerer Alhazred, but their problems aren't over. Alhazred was so tied to the matrix of energy that his death has caused a magical brownout, dimming all the sorcerous power there is, both in people and in lights. The brownout also caused a weakening in the dimensional barrier that kept the Wurm out of Arcanum. For the first time in decades the Wurm have the chance to exact their bloody vengeance upon the mages who sought to destroy them. Can Timothy and Cassandra end the feud before the Wurm devastate Arcanum?