Scott Calvin, also known as Santa Claus, has to find a wife before Christmas or he will stop being Santa Claus. Along the way, he deals with a clone of himself, a teenage son who is on the naughty list, and a love interest who is a teacher at his son's school. With the help of his loyal elves, Scott races against time to save Christmas and find love.

Scott Calvin accidentally causes Santa to fall off his roof, leading him to take over as Santa Claus and save Christmas.

In this third installment of The Santa Clause series, Santa Claus must escape the grasp of the mischievous Jack Frost who wants to take over Christmas. Along the way, Santa faces challenges including his in-laws visiting and the sabotage of his workshop. Will Santa be able to save Christmas once again?