Formerly a citizen of an island called Dile, Nathan escaped the small town and became a traveler when he turned eighteen, spending most of his time between cities and in the wasteland. His job was going very well until a mutation killed him. He was presumed dead for a few hours, until he woke up with a violent illness, but regardless, he was alive. His most noticeable physical change was a change in eye color. Fascinated by this strange recovery, Nathan's team of travelers took him to Evelow, the giant and medically advanced city, for further studies.

Yes, he was indeed dead for several hours, they confirmed through samples that showed decaying tissue, and he remained lower in temperature. Something about his mutation was keeping Nathan alive, so Evelow's medical experts talked Nathan into staying under their observation permanently, thus ending his career as a traveler. It was bound to end anyway, Nathan had a decline in health and needed to be taken care of so much of the time. Besides, this happens to be the same city in which his sister Audrey resided in, so he can feel reunited with her. 

Now that Nathan finds himself stuck in one city indefinitely, he'll use this opportunity to truly shine in his role of guiding others, and thus decides to slowly take over Evelow. Despite that being other people's dreams, Nathan is quite good at making sure no one knows of his intentions, the only exceptions being Audrey, who tries to stop him, and his new friend Echo, who endorses him. 

Nathan has learned that the council could also use some extra advising, and with his persuasiveness, he was able to easily integrate himself into the prime life of Evelow and gets close to the council. He decides on introducing himself to the House of Ellocast, since the head, Dr. Cloud Ellocast, is extremely old, scientifically influential, and perhaps sinister. However, they have a clone that's destined to fill their seat, aforementioned Echo. Nathan learns he can use his new close ties to his advantage. The more he learns about Evelow's dark secrets, the harder it is for him to decide whether he wants to expose them or embrace them. 

Integrating himself as a council advisor has allowed him to get closer to them. Unfortunately his attachment to Echo has made him most biased towards them. Nathan is not one to prioritize aiding others, but maybe it doesn't count if he wants the same thing. Evelow is a lovely city, and Nathan doesn't want it to fall to chaos, just his own control. It doesn't help that his own sister is one of the people that want to see Evelow fall. Hm, so much for family unity.