Kind of a mixed bag
Good: This is no doubt one of the most beautifully drawn and animated Flash movies on NewGrounds. Period. As a side note, the music was very well-chosen and each track fit its respective moment.
Bad: The story, however, was a bit trite and lacked substance. It might have been better for you to make it a series, so that you could explain the plot with a bit more complexity to make it interesting. Some of the dialogue was really unnecessary, and in others it could have been used to enhance the storyline somewhat. Or you could do as another reviewer said and make the whole thing with no dialogue at all.
Your incredible talent as a Flash artist is beyond reasonable doubt. It's a shame that the story couldn't come up to those same standards.