Two sisters, Mia and Emma and their father move from the city to the country to live on a farm with their grandmother. They miraculously discover and befriend a baby unicorn named Rocco. Rocco has magical powers and gives the girls a little bit of luck and a lot of laughter which makes the adjustment to their new home and school a bit easier. But when the town's cowboy learns of Rocco, he steals him away from the girls to use Rocco's powers for himself. The two sisters set off on a wild adventure to save their new unicorn friend.