Moving from the city to the countryside, 11-year-old Anni has a tough time settling in - until she encounters Ponyherz, an untamed horse, to whom she feels an almost magical connection. But soon after, their bond is put at risk, as some ruthless horse thieves are targeting Ponyherz's herd. Struggling in getting along with her classmates, Anni initially sets out to rescue the horses on her own - just to realize that she already has some real friends by her side.