Brand new Christmas family adventure following the ups-and-downs of bickering best friends Colin and Howie from the City Lights and Northern Lights series. The two fighting friends travel to Lithuania to take part in the World Santa Championships, where Howie will represent England. Colin is not too impressed at his own job: Howie's Elf helper. The pals argue and fall out over the course of the events, until Colin is recruited by the mysterious Rainbow Santa team. Now Howie and Colin are going head-to-head in the competition. But the Rainbow Santas have a hidden agenda that could spoil the festivities for everyone. Will Colin realise what he has got himself into in time to bury the hatchet with Howie and save the day? And will the duo manage to get back in time to celebrate Christmas Day with their families?