Starring Ryan Reynolds (in three different dimensions) as Gary/Gavin/Gabriel, Hope Davis as Sarah/Susan/Sierra and Melissa McCarthy as Margaret/Melissa/Mary.
(warning: plot spoilers ahead)
The Nines is a sermon on metaphysics, or existentialism, I think. You never can be too sure, because maybe reality isn't what you think it is. Maybe you're the one writing this. Maybe you created me out of your imagination so I would write this. Maybe this entire planet is something you created in your spare time just for the fun of it.
The Nines follows the three stages (dimensions?) of Gary/Gavin/Gabriel's self-awakening: (1) He is more than an actor in this movie called "life." (2) He's also more than a writer for the screenplay of this movie called "life." (3) He is the creator of this movie (actually a video game) called "life."
Gary/Gavin/Gabriel is a great man (the creator of the whole world for goodness's sake) but we dare not esteem him higher than 9. The people he creates are all less than 9, which makes sense since he created them and therefore they must be lower than him.
Someone raises the question, "Is there a 10? Is there an Almighty Perfect God?" Good question. If there is an Almighty 10, what can deduce about Him by observing ourselves (assuming this 10 created us to resemble Himself)? He must be creative. Also His Essence must transcend our comprehension since He is on a higher level than us.
The Nines (as well as existentialism in general) admits that we are all imperfect, which would be a good thing if this led us to embrace an appropriately humble view of ourselves before the One who is perfect. But this is not the case. Somehow The Nines (as well as existentialism in general) concludes that, because of our incompleteness, we should focus on ourselves until our self-awakening is complete. According to The Nines, even though we are not God and we can't understand or imagine perfection, we should keep focusing on ourselves until we advance our own development and become perfect little gods ourselves.
The message of the nines is like an arrow whizzing straight for a big billboard with G-O-D painted on it but, just before it slams home it makes a drastic turn to the left, goes around the billboard and then keeps on whizzing into the endless darkness behind the sign.
The temptation here is to think, "Well, I'm not God over the whole universe, but at least I'm god over my own personal world!" But this does not make sense. We can't share a piece of the God-pie. The God-pie is all God's, which makes sense because He is God. If God is God, then He is God over the whole universe including our private little worlds.
It's easy for to admit that we're not perfect. It's slightly more difficult to admit that God exists. It is much more difficult to admit that God is The Boss over everything. It is impossible for us to admit (on our own) that Jesus Christ is The Boss over our every aspect of our private lives.
I keep trying to look up the dictionary definition of "existentialism" but I just can't make it stick. Reason: There is nothing there to remember. There is no substance in existentialism to which might mind might anchor. I will be able to describe existentialism as soon as I can describe the taste of oxygen, or the color of space.