Tyler is lost. He wakes up with no memory in the middle of Central Park, and he doesn't recognize Hazel March or Luke Cast who claim to be his friends. Things only become stranger when Tyler, Luke, and Hazel are attacked by monsters, and they learn that they're descendants of immoral beings called Creators who have sworn to protect the world from monsters and other threats. Suspicions grow when Tyler learns that someone purposely stole his memory and NYH, the home for creators, is attacked by monsters. With a mysterious enemy on the rise, the identity of their enemy might be in Tyler's memory. But in the quest for curing his memory loss, Tyler, Luke, and Hazel discover that they're just one part of their enemy's terrifying plan.