I just had such a high-concept #dream. 
People make the analogy that every person we ever met exists in our mind as a mirror person, our internal model of who we believe they are.
In this dream, I'm in some place that is some campus of sorts (not familiar from real life). I'm in an open stone-tiled square, nearby is a grassy slope. I'm catching up to a person (not a person from my real life) and she's holding a laptop, working on the laptop while walking.
I start talking to her, we seem very close, possibly together, but I'm indirectly accusing her of hacking into some important data of mine, and what I'm doing is I'm distracting her so that some associate of mine can stop her from breaking in.
Then there's a kind of record-scratch moment as I'm asking "wait, did this actually happen?". I was passively remembering this moment, but now I'm interacting with the memory.
Now I'm in my parents' bedroom (as I know it from real life, but a bit bigger) and a bunch of people are hanging out. There's tea, people are sitting on chairs, people are relaxing on the double bed. None of them are people from my real life, but in the dream I know them all as friends or colleagues. I also know that in this moment they are their mirror people in my mind.
"Yeah," says one person, "we don't usually show you this memory, because it's no use. What was lost was lost. This is the moment when it all fell apart."
"You should talk to her," says her mirror person, entering the room, "maybe you can still work it out."
"Uuugh," says one of the other people, "that's terrible advice. You're just saying that because _you_ want a backrub."
"It's ok," I say, as I feel sorry for the mirror person, "I'll give you a backrub right now anyway," and I start massaging her shoulders. She is relieved, and relaxes. At least this version of her and I can enjoy a moment together in my mind, the way we were.
There's a whole bunch of detail and backstory missing from the above, as I've been awake for half an hour thinking about this, and the dream has slipped away, but it captures the idea of it.
The direct action in the dream was only like one minute, but every moment of it pulled in things I knew about the setting and the people, so that the whole world-building and the events that led up to that remembered moment could fill up an entire feature-length film.