I watched 2012. The graphics are stunning. Very detailed. Basically, it's about solar flares and the displacement of earth's crust which causes monster earthquakes and tsunamis.
And then governments start building megaships to face the impending disaster and hide it from the common people because resources and time are limited. Governments are bent on only saving the rich, smart and "capable" people.
Some stunning scenes are the destruction of St Petersburg Square where the faithful were gathering for prayers, the cracking of the painting of God and Adam by Michaelangelo and the collaspe of the Washington Monument.
Destruction of Christ the Redeemer Statue in Rio de Janeiro, Brazil, 2012 movie
Still, 2012 is a hoax, a fake. The world will only end when the SUN EXPLODES and engulfs the earth when it turns into a Red Giant, and this will only happen in a few million years. So don't worry.
Nothing now or in the near future will cause a WORLDWIDE extinction. Even an asteroid hitting earth will NOT cause a worldwide extinction.