Upside Down (2012) is a romantic fantasy sci-fi movie set in an alternate universe.
Synopsis: Adam (Jim Sturgess) is an orphan living in the slum-like world of 'Down Below'. As a child and throughout teenage years, he meets and falls in love with Eden (Kirsten Dunst), a girl from 'Up Above', an inverted prosperous world. Both worlds - directly opposite each other - have their own gravity and are separated. Going up is strictly forbidden and the only connection between the two worlds is through the "TransWorld". An unfortunate accident happens, separating the two lovebirds for quite a long time. One day, Adam catches a glimpse of Eden on television. Since then, he begins to plot his way of getting back with her.
Here's a little bit of explanation about Adam's and Eden's worlds. Their planet is unique from other planets as it is the only one that has dual gravity. According to the movie, the dual gravity has three rules:
1. All matter is pulled by the gravity of the world that it comes from, and not the other.
2. An object's weight can be offset by matter from the opposite world (inverse matter).
3. After some time in contact, matter in contact with inverse matter burns.
These three rules will explain a lot of scenes in the movie before you start wondering and asking questions about the real law of gravity.
As a romantic sci-fi, this movie is basically a Romeo and Juliet story with a modern twist. Well, they are trying to prove that love is a more powerful law than the law of gravity. Even when two persons are forcefully separated by the law of gravity, love shall prevail. Yada, yada, yada. I'm not trying to be cynical... but I really don't buy the idea of such hyped-up power of love.
Putting love aside, I do like the mind-boggling and beautifully rendered visual effects that give this movie its spectacular feel. The seamless integration of 'Up Above' and 'Down Below' in the same scenes / frames is undoubtedly unique and awesome.
All in all, this movie is quite entertaining. It doesn't have the power to move you to tears because you will be busy admiring the visual effects.