In the sequel to Down World, Marina is drawn back to the cold brick door by a mysterious man. Despite knowing she can never reopen the door to Yesterday or reconnect with Kieren, she finds herself returning to the room, reminiscent of visiting a gravestone. The three doors symbolize her lost loved ones, and while she understands that opening them leads to death, their call is irresistible. Eighteen months have passed since Marina first encountered the doors, and now she’s a senior living with her dad and stepmom while her brother Robbie and mom are in Oregon. As she and her best friend Christy plan for college and crush on their new history teacher, Mr. Martel, Marina discovers he harbors secrets of his own. When he confronts her with a shared past, she realizes she cannot turn away from the doors that have haunted her for so long. The struggle between her desire to move forward and the pull of her past intensifies, forcing her to confront the choices that lie ahead.
