In this book, Heidi is married to Peter and living happily in the good doctor's great manor house in Dorfli. She has beautiful twins and little Marta who came there to live. It's a warm and tender and altogether exciting story which children of all ages the world over will enjoy.

Heidi and Peter have gotten married and are expecting a baby. Heidi's friend Jamy from boarding school comes to live with them and teach at the small school in the village that Heidi had to stop teaching in because of her pregnancy. Later Jamy's sister, Marta, who has a nervous problem and has occasional crying fits comes to live with them too. Heidi and the grandfather work wonders on this little one with their caring, love, patience and no-nonsense approach. The baby is born but it turns out, delightedly to be twins! A lovely story of growing up and learning to control oneself surrounded by the beautiful mountains of Switzerland!