Since Iris learned to ride on the Sternenhügel pony farm, she has been spending every free minute there. And now Minna and Mika, the owners of the pony farm, have taken in a puppy! He is so cute! But Iris and her friends have to learn that a dog is not only there to play, but also to do work. They accompany the little one through his first year and learn a lot about the rearing, nutrition and upbringing of young dogs.