The concept here is a little bit pat when you boil it down to words and this is why I probably shouldn't because it doesn't highlight what the film does well. Anyway, essentially we have a lone character find a heart (love, happiness, whatever you want it to be really). This results in others wanting it too and nobody considering sharing possible. What follows is that all the characters fighting for the heart start to become one big mass of intertwined characters and creatures, all battling against one another for the same thing with an end result that is a little bit predictable – or at least it would be if the manner of delivery of this parable didn't keep you focused on that instead.
In terms of animation it is not only very well done but it is creative. The characters are humanoid in shape but are structured differently and their bodies and heads change constantly as they morph and twist round each other. Visually it is hard to describe (as I just proved) but it is very well done with incredibly smooth and fluid animation all filled with images and shapes. Ultimately the message and conclusion is a simple one but the manner of delivery does really carry it because there is a lot more to it when you get caught up into the twisted yet at times appealing animation and the energy with which it is delivered.