Very good!
Like the previous reviews, the intro was a bit long, but I can see you were sticking with the soundtrack, so that is understandable (perhaps try more transitional stuff next time to keep things going while waiting for the ques from the music).
I had no issues watching it and the artwork was pretty good. On the first scene, the arm to shoulder connection could use some tweaking, but once zoomed out, it was no longer an issue (close ups, yea they are devious little guys aren't they?).
The plot was great and even though the movie ended quickly, it still held the main idea fully and stays on topic.
In the end, fix the transitions and fix the shoulder issue (or you can leave it be, it's only the one scene that the issue is at) and you are the owner of a great flash movie. Even with those issues, it's still great! Keep it up!