Two sisters together with their father move from town to village and live with their grandmother. On her farm, they find a little unicorn named Rocco, with whom they make friends. Rocco has magical powers and gives the girls a little happiness, jokes and laughter, which makes it easier to adapt to her new home and school. But when local beggars cowboys learn about the magic unicorn, they kidnap Rocco to use his powers for themselves. The sisters go to save their friend.