Does anyone still believe in Santa Claus these days? Well, Bertil is certainly not one of them. But one day Mr. Moose, the moose, crashes through the roof and then into the family's living room. He was reportedly on a test flight with his boss, Santa Claus, when he crashed. From now on, Bertil has something to think about. He quickly makes friends with the moose. But after a while, the Boss himself shows up and wants his deer back! However, Mr. Moose has already made himself at home in the Bertiles' garage...