It's a Christmas themed map set in the NorthPole, with many little elf huts and igloos And stuff. The players are all elves. The zombies all have tattered elf clothing on them, and instead of hellhounds there are polar bears. The boss would be Santa with an LMG and his reindeers also attack you. The mystery box is a present.
[Edited on 12.22.2012 10:45 AM PST]