I have thought of many story lines for our main short movie but our group can't decide to which one to stick to.
Here is an example of a storyline I've thought of:
A boy is depressed and worried about something disturbing that he witnessed, so he decides to vist a therapist/psychologist to talk to him about it. Then a flashback appears showing what happened, after the camera goes back on him, the boy looks to the floor, he sees the murder happening.
This is just one of many ideas I've thought of.