The City With Two faces is a continuation of the feature length Fan Film Joker Rising (as seen on youtube) That was a film about the Joker’s Origin. But now that the Joker has been born he is free to terrorize Gotham in new and more demented ways than ever.
They have launched a new teaser and Indiegogo campaign for the next two feature films. I think you will like the teaser at least. It has a very dark tone.