It is Paris, 1714. Adeline LaRue is fascinated by the world. She yearns to explore it all, but her life prevents her from doing so. Desperate, she strikes a bargain with the darkness: unlimited time on earth in exchange for her soul when she no longer wants it. She quickly understands, however, that it was a curse. The people she meets forget her as soon as she is out of sight. Unable to do much else, Addie roams the earth for three hundred years, constantly recalling but always forgotten...until one day, in a dusty old bookshop in the crevices of New York, someone remembers her name.