Fourteen-year-old Kathi Lehner has been growing up with her father Robert and grandmother Hedwig since the death of her mother. Her neighbor is the elderly coachman Butzbichler and his horse Dublin. When Butzbichler has to go to the hospital after a traffic accident, Dublin is to be slaughtered. Kathi and her grandmother decide to buy the horse. They find a new home for the four-legged friend - at least until they can sell Dublin again. But then everything turns out quite differently.