With the arrival of the spring, Peter's job as a goatherd starts again. He gathers all the goats and goes back to the meadows in Heidi's company. The mountain is full of activity again: the animals are busy everywhere, the birds are back and the fields are filled with flowers. A storm makes them seek for refuge, where a lost goat joins their flock. Its owner, a bad tempered shepherd, accuses them of thieves and gets into a fist fight with Peter. Joseph comes to the kids' rescue.