While his friends design toys in the workshops, train reindeer, or plan the Great Sleigh’s flight paths, Ivo solves Christmas tree problems all over the world. Just before Christmas, disaster strikes. The lights on one of the biggest Christmas trees in London suddenly go dark! With crowds gathering and festive cheer fading, it is up to Ivo to find a solution. Time is against him. He must be home before Christmas Eve. Ivo must use the magical power of Elfsville.