Hali was the Traveler for the territory of Aldan, but she didn't know it. She also didn't know that her mother had been killed while traveling in the territory of Harper, a hidden territory, a territory like Veelox, just far more advanced.
In the basement of her mother's house there was a flume. This flume hadn't been activated since Willow, Hali's mother, left 5 years before. But on this day, Hali's 16th birthday, the flume was activated, and through it came Bobby Pendragon. He had come from Solara to help Hali on a quest very similar to his: To save ten territories from a crazy, power-hungry Traveler.
