2020, Santa faces a new challenge-his reindeer are quarantined, putting Christmas in jeopardy. With time running out, Santa turns to an unexpected hero: Mac the Moose. Though unsure of his abilities, Mac decides to help, even though he can't fly.

With encouragement from Santa and his fellow moose, Mac learns that believing in himself and the Christmas spirit can work wonders. Together, the moose take to the skies, delivering gifts to children around the world and saving Christmas. For his belief and perseverance, Mac is awarded the "Flying Medal of Christmas," proving that anything is possible if you just believe.