Were they gods?
The fictional town/world goes into chaos when they're not together, but at the end they become one again (ying and yang) and are on the primordial beach creating a new world, earth? At the end, he says "This is Planet Earth, Agent White. Do you read me, over? Today I kept the peace on this planet." etc and I took that as a hint that they finally learned who they were and took their rightful place as creators.
Either way, a trip of a movie. I liked it.