The apocalypse is cold, hungry, and feral. Unless you're Big Bill—a grumpy survivor forced into a velvet Santa suit—and Rat, his chaotic elf companion. When they stumble upon the last Coca-Cola Christmas truck, they must use tinned ham, a dead battery, and desperate holiday spirit to survive a troop of cannibalistic Boy Scouts. This Christmas, the last hope isn't a hero. It's a delusion in a red suit.