Anthology of Evil II Vol. II The Unwritten

Three very different universes. Three very different stories. Yet somehow they are all the very same story. That story is leading to the end of all three while most don't even have a clue what is at stake. And those who do, have no idea how to fix it. In the end, not one of them will have anything to do whatsoever with the resolution.
Universe 1 - A man wakes in a rough cabin in the woods, not knowing how he got there, or why this woman was torturing him.
Universe 2 - Two scientists are ramping up their pandimensional experiment, excited for the fame it will bring them, the scientific breakthrough they are about to achieve. But something isn't just quite right.
Universe 3 - A strange being floats about contemplating its existence, and those floating about, avoiding it, feeding on the river of nonexistence below them.
What do these all have in common? And will it destroy them all?