It was Christmas Eve, the big day, and Santa's flight crew, the reindeer, were out of action due to a dodgy batch of carrots.

Santa was beside himself with concern both for his antlered friends and for the big night. How would he deliver all the many presents to the good children of the world?

There was one potentially risky solution. An as yet, untested project that Santa's Elf Engineering team had been investigating. A Hypersonic-Alpaca by the name of Brian - currently on work experience placement at Santa's grotto in the North.

Would Santa and his colleagues manage to complete their rounds in time, delivering presents? Only time, and an alpaca called Brian, will tell.