In 'Post-Apoclypto', the unofficial sequel to 'The Pick of Destiny', the animated versions of Jack Black and Kyle Gass unlikely survive the nuclear disaster of their own making. When they open the door of the refrigerator they used to hide in, the new world is inhabited by aliens, runaway robots, two-headed four-legged friends and a host of other strange creatures. Will JB and KG still be able to save the Earth? And most importantly, will Tenacious D, aka The D, be able to maintain their status as the best rock band in the world?