Santa and his sleigh are loaded up with gifts and headed to spread holiday cheer with nothing standing in the way! Well, except for an unfortunate calendar mix-up that sends an unsuspecting Santa to Holidayville during the Fall Festival instead of on Christmas Eve! In the enchanting town of Holidayville, where every day feels like a celebration, Rihanna and her best friend, Harlem, two curious five-year-olds, run into an unexpected guest while enjoying the festival fun. At first, Santa considers returning to the North Pole because he does not believe he will fit in with everyone else, but after Rihanna convinces him to join the celebration, he decides to stay. Besides, Santa has always wanted to participate in other holiday traditions, like the annual costume parade.Rihanna and Harlem embark on a heartwarming adventure to help Santa navigate the busy streets of costume-wearing neighbors without anyone being the wiser. With help from his new friends, will Santa find a way to enjoy this magical mix-up while keeping his identity a secret from the other residents of Holidayville? An inspiring story about the magic of new adventures and being accepted just as you are, "Santa's Holiday Mix-Up" is the perfect holiday treat!.