Sarah can't believe it: Her parents are emigrating to New Zealand and she has to come with them. Sadly, she leaves her beloved foster horse behind and only reluctantly accepts life on the other side of the world. Only when Lucas, who is actually closed off, takes her to the nearby mountains do things change. The boy with Maori roots, who loves horses as much as she does, shows her the Kaimanawa wild horses living in freedom, and Sarah immediately falls in love with a stallion with a silver mane. Secretly she gives him the name Dream. She is all the more shocked when Dream is captured. He is threatened with being sold or maybe even slaughtered! Together with Lucas, Sarah does everything in her power to save the stallion. But she can only help Dream if she gains his trust. A task that seems almost impossible. But with much patience Sarah manages it, ei.