Scout's story continues in this follow-up to The Hound of Endtown. The Defiant shuttles a single man, the Passenger, to carry out a mission to save humanity from extinction. Surrounded by crushing infinite void and haunted by memories, the Passenger is steadily consumed by madness. The idea of walking out into the cold vacuum of space becomes more appealing as the years pass, until hope comes in the form of a mysterious message. Ignoring the impossibility of it, the Passenger is reinvigorated by his correspondence with a ghost from the past. But are the messages real or nothing more than the delusional imaginings of a man overcome with loneliness to the point of insanity? Or maybe, just maybe, they're real?