That's why I keep notepads near my bed. I remember one dream that wants to become a trilogy about witches in a world where they're believed to be all dead. The premise was that the witch trials were real, because the witches they were burning were the first to actually have supernatural powers, and so couldn't control them very well. There was this huge disaster where thousands were killed and whole villages wiped off the map, and everyone everywhere did what they could to kill off the witches. And that was just the background knowledge of the dream.
I dreamt the place twice. In the first one I received what wiccans would call a "magical name". There was a witch in this hidden school (not very a la Harry Potter, actually) who specialised in receiving the magical names the universe would give to the witches, and while she or he was in this trance, singing a verse that would reveal the name, another witch was on hand to write the name down. The name surfaced with me as I woke, repeating itself over and over and over. At first I didn't believe I was remembering accurately as the first half was a psudonymn I'd chosen for myself from Greek mythology, and the other was the name of a goddess from a video game, which instantly made me go "yeah, wtfever." The more I thought about it, though, the more I went "it's symbology. Symbology isn't going to acknowledge the difference between what is or isn't. A game's mythology is just as valid as Greek, because it's telling me to look at what the goddess represents." And from there I accepted it.
Yes, I remember the name even now, but as I received it in a dream in a very sacred way, I'm going down the route of secrecy.
I later dreamt a continuation where the main character, Maggie/me, and her best friend from the hidden schools, were out in the real world. Now, in the previous dream, Maggie had started the school late, which was unheard of. They're all noticed by special witch-finding-witches by a young age, and she was 16. However, once at the school she learned things so quickly she was only there for three years instead of the usual eleven to twelve, despite having started at the bottom with everyone else. On top of that, the teachers had to acknowledge that there was nothing more they could possibly teach her, but that she had only scratched the surface of her abilities, and the rest she would have to learn on her own. A whisper started in the underground to reach the ears of this rather nasty fellow. He decided she would either work with him, or die so that she couldn't possibly pose a threat.
His particular power (everyone had their strengths. Maggie's was most noticeably empathy and psychic things, her best friend was dream magic) was to make potions, including one that granted everlasting life and youth so long as you took it regularly. He'd changed names through the ages and felt secure that no one could ever bind him because they'd never know his real name.
Through reasearch, Maggie and her bff put the links together and somehow (I forget just how) find his real name. He captures Maggie, but she starts a little binding rhyme. The first verse is harmless, but sets up the second, and when she starts he laughs, for he believes any name she has can't be right. Well, second verse comes around and BAM. Bound. Real name. I can never remember what it is on my own, but I wrote it down upon waking, because it was repeating in my mind as I woke.
He doesn't believe her capable of killing him now that he's harmless, and she admits she can't. But her best friend can. And turns around and leaves the room as her bff gets down to the business of putting the screws to him. The idea being that he's dead by the end. Et voila!
Then of course, my bff who has ease in dreamwalking had an intermediate dream about them. That's always fun.