Scott Calvin (Tim Allen) gets quite the surprise when he learns that his ex-wife, Laura, and her husband, Neil, have had no luck convincing their son, Charlie, that Santa Claus isn't real. But on Christmas Eve, something magical happens. Scott finds an unexpected guest on his roof—Santa Claus himself! When Scott calls out, Santa is startled and accidentally takes a tumble. He vanishes, leaving behind an 8-reindeer sleigh and a suit with a note: if anything happens, put on the suit. Scott obliges to make Charlie happy, and suddenly, he's whisked around town delivering presents! Soon enough, he's transported to the North Pole, where the elves break the news: Scott is the new Santa Claus. As thrilled as Charlie is with his dad's new role, they must keep it hush-hush so Scott doesn't lose custody of his son. 🎅✨