The storyline is very good. It is not that original though. You don't realkly care when the action animation is as good as it is.
It feels slightly dated, but the action animation is incredible. Definitely worth 48 mins of your time just to watch that.
The music is used well, it sets the mood and tone in a way that doesn't take anything away from what is happening on screen. At no point does it become a distraction. The voices are very well done and the mix of languages is handled very well.
Not much is shown by way of character development. You get little snippets of information in off-hand conversations that the characters have with each other which leaves you wanting to know more about them. This works really well in the short film.
This is a very good film, even for it being so short. It is not good because it's short and therfore will leave you wanting more, the mark of a good production.