Mankind can no longer reproduce because of gene manipulation aimed at making life longer. The clones ruling the bottomless underworld may have become fertile. Parton is selected to go on a mission through a subterranean labyrinth crawling with monsters to secure humanity's future.

Jules follows Milton who lives a quiet life of routine in a small western Pennsylvania town, but finds his day upended when a UFO and its extra-terrestrial passenger crash land in his backyard. Before long, Milton develops a close relationship with the extra-terrestrial he calls "Jules." Things become complicated when two neighbors discover Jules and the government quickly closes in. What follows is a funny, wildly inventive ride as the three neighbors...