That is a very, very open frame to go on. You gotta narrow it down a bit; do you want fantasy, drama, science fiction? I personally am into fantasy and science fiction; could be a buddy picture where they engage a castle. Just an idea.

Well, two characters and two minutes eliminates virtually all drama and science fiction. Think about it; you'd need hundreds of characters to do a proper battle scene, and at least a hand-full to do a castle engagement or a complex plot.

I'm thinking something pedestrian, it could be fantastic, but there is very little storyline-wise you can really be deep about in two minutes or less.