15-year-old Wendy Thorsteeg lives with her parents, the adoptive sister Sina and her grandmother Herta at her own stud farm Rosenborg. Rosenborg is a meeting place for Wendy's friends, who are of course just as enthusiastic about riding as they are themselves. It is always about friendship with everything that is involved: having fun together, helping and comforting themselves, but also fighting and getting along again.