Mountain girl Heidi's heart belongs to the Alm, where she lives with her grandfather and spends her days with goatherd Peter and his flock of goats. When her relative Dete takes her away and places her in a wealthy household to be a companion to a crippled girl, Heidi is constantly criticised by the head housekeeper for her unrefined ways. Although she tries to hold in her overwhelming homesickness, all Heidi wants is to return to her grandfather where she belongs.