The Mouth of the Cave
Think of it like this:
Someone’s tied up, at the mouth of a cave. Maybe to a post, or a tree. It’s not so bad, really – there’s shade, and a little stream, a really great view. (Pretend Someone doesn’t need to eat. Otherwise this will start to fall apart.)
And every few hours, (or days, or minutes) this beast lurches out of the cave. It gnaws on our Someone. It chews and rends. It’s awful.
But what’s worse is knowing it’s coming back. It colours everything. It ruins the view.
Now, the question: who’s the Someone? And who’s the beast?