Heidi is a little orphan girl who spends her childhood with her grandfather on the lush alpine pastures of Switzerland. One day she is taken, against her will, from this poor but happy life in the mountains, to a wealthy family in the city of Frankfurt. There, she is to become the playmate of a rich businessman's disabled daughter. Although Heidi and Klara soon become close friends, Heidi is drawn back to her homeland. When Klara is finally able to visit Heidi in her alpine surroundings, she becomes acquainted with a world she doesn't want to leave. She gains so much strength and courage to face life that in the end, she can overcome her childhood paralysis.