Not entirely unoriginal...
I'd like to start off by saying this is a really sweet flash... but parts of it seem to be taken directly from scenes of Vinnie Veritas' flashes, and apparantly Naruto? (I wouldn't know, because I don't watch Naruto, but anyway...)
That one part with the people walking through the city beared an extremely striking resemblence to a scene from Rush 2, only it was colored using a darker color scheme. If I were you, I wouldn't do something quite so blatant in the future. I'm not saying that your flash doesn't have any original touches, because it does. I'm just saying that using actual scenes from other works probably isn't the best idea.