Truancy

Picture yourself in a classroom. The teacher is handing out the final exam. You have yet to crack open the textbook. In fact, you don't even own the textbook. And you've skipped every single class. Just a garden-variety nightmare? Not this time. This nightmare is real, as foretold (more or less) by the apocalyptic prophecy of the ancient Maya - except for the parts about the shape-shifting tree frog and the giant sea monster. The end is seriously nigh, and your grade on the final exam will determine the fate of all mankind. So grab this book, find a comfy chair, and start cramming!