On December 21st, 2012, the day the Mayan Calendar ends, the Inter-Galactic Alliance's Galactic Law Enforcement Unit attacks Earth destroying all kinds of major industries. They inform us they are not pleased with the way we have polluted the planet since we were put here by one of the Alliance's members - The Emdoigs, 136,000 years ago. They notify us they are in the process of decontaminating the planet of all the damage we created, and we have one year to clean up our act, stop polluting and stop fighting amongst ourselves or their orders are to wipe out mankind. They express in no uncertain terms that habitable planets in the universe are too precious to be wasted on the likes of us, and they are more than happy to have another society take care of it and live in peace.