"Heidi" by Johanna Spyri is a work of children's fiction published between 1880 and 1881. Five-year-old Heidi is sent to live with her reclusive grandfather high in the Swiss Alps, where she finds joy among the mountains and befriends young goatherd Peter and his family. Her idyllic life is disrupted when she's taken to Frankfurt to companion a wealthy invalid girl named Klara. The story follows Heidi's journey between two worlds—the freedom of mountain life and the constraints of city society.