Heidi is an eight-year-old Swiss orphan, innocent and innocent.After being briefly taken in by her aunt, she was taken to her grandfather who lived in the Alps.Although it was challenging to live with his taciturn grandfather at first, the vast and magnificent mountains and free and fresh air allowed Heidi to gradually find her own paradise. However, the good times did not last long. The aunt who was determined to seek benefits "taken away" her from her loving grandfather and sent her to the Sesamian family, a wealthy bourgeois family in Frankfurt, Germany.There, Heidi became the companionship of the wealthy daughter Clara, who sat in a wheelchair all day.In the luxurious but depressing urban life, Heidi never could adapt. She missed the sunshine and wind in the mountains, and even more missed her grandfather in the distance.Although she tried hard to adapt to the new environment, she never stopped dying to return to the world where she truly grew up freely.