Initial Film opening ideas

Currently, I have had several ideas for what I wish to do for my 2 minute film opening however only a few have really shone through as possible go a heads. For the purposes of this post, I'll only write them up in brief of the plot of these ideas as they are only at this point in time, rough ideas:

Idea 1: This is the most sinister idea I have. We see a guy burning documents in a darkened room. Obviously night time. Once guy has burnt all his documents, another man comes in asking where the documents are. The first man responds saying he has destroyed them. At which point, the second man shots the first in the head and leaves him there lying on the floor.

Idea 2: Perhaps one of the happier(ish) ideas I've come up with is more of a love story base opening. We have a scene of girl and boy standing opposite each other, separated by something, be it a station etc. Then a train passes and after its passed the girls disappeared and the guys narration comes over explaining who she is, who he is and a rough idea of where the film is going to go.

Idea 3: a slight change to idea 2. Instead of the guy narrating, the camera cuts back and forth between him and the girl and how they keep encountering and a psychiatrists office where he's talking like that. In this version we are told the girl is the guys dead wife from 3 years ago.

Idea 4: A blend on both the film "The Graduate" and "Inside man", where we see a girl traveling to an unknown destination, maybe on a bus or train, while a voice over tells us who she is, where she is going and gives us a rough idea of whats about to happen (as this voice over will be made to sound like shes talking from the future after these events).