There is a beautiful House somewhere in the world. In this house live Big Daddy and Big Mama - actually Mr. Pierce and Mrs. Pierce. And two sisters - the eldest is called Minnie, and the youngest is May. One day, on her sixth birthday, May receives a wonderful white pony as a gift. The girl calls the horse Darling. From this day on, the adventures of the ponies Darling, May and her sister Minnie, as well as their faithful friend the cat Felix, the wisest inhabitant of the farm, begin. Incredible and funny events await them this summer. What happens when little girls don't listen? Do horses like sugar? And what to do if you are lost?..