Heidi is an orphan girl, raised by her Aunt Dete and then sent to stay with her insolent grandfather in the countryside.

Fascinated by the beauty of country-life, she starts enjoying her life in the mountains and befriends Peter, a goatherd.

Her life takes a turn when suddenly her aunt arrives and takes her away to Frankfurt, where Heidi starts attending to Clara, a girl on a wheelchair.

A series of adventures begin in Heidi's life as she ventures on her journey to refined happiness.