Very well done...
When I read the story in your comments I thought...oh dear, soppy...but after watching it I see how delightfuly tongue in cheek it was.
Animation and sound was top-notch -
Only gripe is the movie file size, and that's because of the nearly whole song you have at the credits.
I think you should compress your audio if you're going to have complete songs. Perhaps compressing that song and leaving the quality good for your main movie audio.