When Santa discovers a crack in the sleigh, he sends his best elves to find the only ones who know how to fix it--- The Elfsmiths. These legendary, blacksmithing elves have never been seen by a regular elf, and visiting them requires a treacherous journey through the Forbidden Forest. As the clock winds down to Christmas, the slow-moving Elfsmiths and Santa's super-speedy elves must find a way to work together, fix the sleigh, and save Christmas.