The main question is about "movie" however "end goals" i like as an answer too.
I agree so many valid answers... but honestly i can't choose which one is best.
Worries, desires? hmm sounds more like parallel side effects of something... but not a source.
How about this, commonly you don't have any nightmares, but there's one night for example you dream about catastrophic disaster, let's say plane crash. You wake up imediatelly and 10 sec later you hear a detonation explosion, someone placed a bomb under a car nearby. Nightmares itselfs are not bad, but they say that's something wrong in your neighborhood or your close enviroment. I guess it can be worries but not always yours.