Heidi is orphaned and her uncaring maternal Aunt Dete takes her to the mountains to live with her reclusive, grumpy paternal grandfather, Adolph Kramer. Heidi brings her grandfather back into mountain society through her sweet ways and sheer love. When Dete later returns and steals Heidi away to become the companion of a rich man's wheelchair-bound daughter, the grandfather is heartsick to discover his little girl missing and immediately sets out to get her back.

Two groups of young women get into a pair of horse-drawn carts, and go off for a straw ride through the snowy streets. As they pass by a group of children, the children throw snowballs at the riders, and they and other persons begin to join in the fun. Then one of the carts tips on its side, spilling some of its occupants into the snow. Everyone soon decides that they enjoy playing in the snow even more than riding.