Santa and his elves are ready to finish making presents . . . but where is the last batch of Christmas letters? For the first time in history, the mailbox at the North Pole is empty. If Santa can't find the missing letters, Christmas will be ruined for children across the world.

Just when it seems that all is lost, out jumps Baby Santa. The youngest member of the Claus family relies on his quick wits, his winning attitude, and his endless energy to solve the mystery of the lost letters with help from remarkable animal characters around the globe.

Responding to a cry for help, penguins, kangaroos, and even a three-toed sloth cooperate with friends on every continent in an amazing race to save the holidays.

With a boundless spirit of cooperation, Baby Santa proves that Christmas is for every living being. Children and their parents will thrill to this exciting holiday adventure guided by the youngest member of the Claus family, Baby Santa.