Santa Claus went on vacation, and this year his replacement is a girl: Santa Belle. It is she who welcomes the two best children in the world who are given the opportunity to visit the kingdom of Santa Claus. By mistake, the machine teleports Tony and Frank a couple of middle-aged thieves into the castle. Elves who live hundreds of years don't realize the difference. Only Sam, Belle's assistant suspects something is wrong. Meanwhile, the two funny thieves take it into their heads to steal the elves' gold, but to open the safe that contains it they will have to find the clues contained within the Puffins cartoons and face Johnny Puff.