Could be really good.
There is plenty of back story to explain as well as who the hell Joshua is and who he is working for so in the story department you are pretty set. I would, however, study up on stick animation and try to get a smoother animation style so that the action isn't quite so block. Also, do not make the music the focus, get a couple of buddies to help you with voice acting and make the music background. These are my ideas as to what can make this very mediocre flash into an awesome series.
It is cool.. what else to say ;)
I think you have a good idea for your storyline. I hope you find some tips on flash so you can make the movies the way you want :)
Try googling flash tutorials to see if there is anything of enterest there. Any ways, good luck.
the flash is just fine but if you are going to use bubbles you must make them bigger and also make them fade away slower
Mad song (The Offspring Rock!) though you shouldn't have it played through the whole animation, perhaps the chorus or solo when he's falling or something.
Also get some voice actors coz nobody likes bubbles to read. check the forums for that coz your sounds of him falling sounded bad.
Your moon was taken straight off the internet too, and it was oval shaped. you could have just traced it.
Your lip-synching could do with a bit of work. You dont need teeth in there.
When he was falling it was good the way you blurred him though the cliff side should have moved faster
And lastly backgrounds are easy to draw just put some mountains or maybe a city or rocks there. Though they were pretty fine the way they were.
(It was also good that you had buttons)