Being an executioner for the state is exhausting, but after a lifetime of dispatching the criminal and the inconvenient, fifty-eight-year-old Grenda finds it does have its compensations. Her cat-sized dragon Bjartur and the dragon eggs she tends are all the friends and family she needs. Completely cut off from the outside world, she happily accepts the luxuries owed her status - including a pet octopus named Morrigan - without the faintest twinge of conscience or doubt.

All that changes when she encounters the most unexpected nemesis: a young refugee girl whom Grenda is incapable of executing. Against her will, Grenda finds herself shifting from killer to caretaker, risking her life to defy the state she's never questioned and help young Allora to freedom. Everything Grenda thinks she knows about her world, her life, and even her own identity cascades out of her control-including the dragon-bond she holds dearer than life itself.