Only eight-years old and little Mia has already had a pretty tough life filled with bad luck and hardship. After the loss of her mother, she, her sister Emma and her troubled father move to Grandma Rose's ranch in the middle of nowhere Montana. They're a broken family looking for a fresh start and needing a miracle. Then, one day in the woods, Mia discovers a unicorn colt- a magical creature that brings luck to anyone who believes in it. Thinking she's found the perfect fix for her family's problems, Mia sets out to use the Unicorn to make life better, only to discover the magic she yearned for was with her all along.