DepicT- Own Idea for 90 second short movie

So we have been asked to come up with an idea for a 90 second short movie to pitch to the groups we are going to be assigned to. This idea may not be the one that we actually go ahead with, but i still have to share.

The Idea:

My idea is to have a meeting between two people going on in the forest but when they think they are all alone the worst happens. A killer comes out of the treeline and kills one of them. The next part of the movie focusses on the other person trying to hide from the killer.