The End of Serialization as We Know It

"The End of Serialization as We Know It" is the tenth and final episode of Season Twenty, and the 277th overall episode of South Park. It will air on December 7, 2016.

Synopsis
As TROLLTRACE goes live, Sheila logs on to see Gerald's on-line activity. At SpaceX, Cartman tries to convince the scientists that going to Mars is a bad idea. And defying their mom, Kyle and Ike get all the kids together to try to save the world from certain destruction.