It's real good. If I tell you what it's about I'll spoil the ending. It's thought-provoking and gets you to really think about life. I've seen it twice now. It's deep and sad and existential.
It did a good job of getting me to relate to the main character, Henry. He just couldn't understand anything going on around him. The voices, the people he knew who don't know him at all. Going through life disorientated and confused. He needs help. But nothing is as it seems and that's the best thing about it.
Watch it.