The Underline

Haven't seen the movie, but from the description, especially the end where the room slowly dissolves to nothing, I'm reminded of "The Langoliers" and the same sense of emptiness and dissolution. Seems like there are too many similarities to be pure coincidence. We could probably stretch this back even further to the underworld of Hades and forgetting that comes with drinking from the river Lethe and the slow dissolution of what was once a life. I think one key rule would be to not eat anything you find.