In the Spirit of Christmas holiday special, Lucky has ordered a custom-made fiddle for her dad (best Christmas gift ever!) except it doesn't arrive on time. In an attempt to get the gift, Lucky leads her friends on a misadventure into the city. After a day of roaming the city, the group makes it on the last train back to Miradero. All seems to go smoothly until an avalanche derails their plans, forcing them and their fellow passengers on a dangerous...

Free-spirited Lucky Prescott moves to Miradero to join her estranged father, and is decidedly unimpressed with the sleepy town until she discovers a unique tie to her late mother, who was a fearless horse-riding stunt performer. She quickly forms a bond with a wild mustang named Spirit and makes two new pals who love horses as much as she does. When a heartless wrangler plans to capture Spirit and his herd, Lucky and her friends set off on an epic...