After eleven years of searching for his vanished daughter Lily, Elias Thorne receives a cryptic summons to Waypoint House, where he learns she was stolen not by a kidnapper but by the Committee—ancient, lonely beings living underground who feed on children's emotions. Lily escaped through a door built from memory, returning to their Nebraska farm. There, she and Elias await Cora, a girl taken from Ireland a thousand years ago. Through pancakes, gardens, and letters to Lily's estranged mother, they discover that love is not hunger but letting go, and that the only true door home is made of memory, hope, and maple syrup.