Jasper works at the Here For You. Try as he might, he has no real memories of the past for Hell on Earth arrived. There are people who seem to know him (like a trainee security guard named Kyle) and he discovered his job when he happened to walk into the store and got cornered by his manager. However, he has the same recurring nightmare in which the world comes to an end. And it's coming soon -- on Black Friday. With some help from Kyle and a friendly pet demon, he plans to stop all of that, dodging crazy shoppers and bloodthirsty monsters (same thing?) and save the world.
Initially, the book is an absolutely hilarious and original farce that imagines what would happen if the end of the world came and no one cared so long as they could keep shopping. The story loses its fun as the farce peters out about half way through and the plot turns serious (or as serious as it can, given the premise). But while I loved the premise, I just couldn't get into the largely nonsensical story and weak characters.