Good in Theory
I first watched the five minute preview/short film and then read the script.
When I saw the preview/short film I thought it was great.
Then I read the script. I think it was good in theory, but it needs work.
First off, it needs a more satisfying ending and a different plot twist. Secondly, I don't think Superman or the Flash (or any other superhero) would be so bureaucratic that they would turn on each other.
That's just my constructive criticism.