With his mission in the Realm seemingly behind him, Holden throws himself into his new "normal" life, working a regular job and furthering his relationship with Willa, but he can't shake the feeling that something is coming. Meanwhile, Diane is asked to make a huge sacrifice to further the investigation into Hollow Sky, one that doesn't sit well with Tom, and Charlie reappears hiding a secret, and acting on orders from Yellow Jacket.
A young man named Holden wakes up from a coma after 12 years and discovers he is emotionally still a teenager, physically an adult and possessed with supernatural abilities that propel him into the middle of a dangerous conspiracy.
Holden's childhood best friend Kevin, now a therapist, is haunted by guilt after the incident that put Holden in a coma; Holden's mother Diane, who has refused to give up on Holden throughout his coma and now is determined to protect him; Holden's father Tom, who is emotionally withdrawn after his son's ordeal and defers to Diane; and Holden's clever younger brother Luke, who grew up in the shadow of his brother's tragedy and is now faced with a brother who knows less about the world than he does. Finally, Willa, a woman who appears to be interested in Holden, and who warns him he is in great danger. From who, and why?