Kate (Darby Camp) and Teddy (Judah Lewis) are siblings who have a very close relationship. Although their friends told them that Santa Claus is fake and does not exist, they decided to use their camera to take pictures of Santa Claus (Kurt Russell) on Christmas Eve to prove their friends wrong. Christmas Eve is here, and what the siblings didn't expect is that they not only saw Santa Claus with their own eyes, but also got the chance to ride on his sleigh. However, an accident happened, and the siblings' poor driving skills caused the sleigh to be crashed, which means that the Christmas that children all over the world dream of may be ruined. In order to save this year's Christmas, Kate and Teddy decided to cooperate with Santa Claus.