I have no real idea what it's about; neither, apparently does the synopsis writer for IMBD:
The story centers around a family with three boys in the 1950s. The eldest son witnesses the loss of innocence.
Well, all righty then.
Not that I'm complaining. Too often, movie trailers tell the entire story of the movie and there's no real point in seeing it if you're interested in the story alone.
Oh, but The Tree of Life looks intriguing. Due to come out next week, it's sure to be swallowed up by the Summer's blockbusters. But if the trailer's any indication, you'd better see it while you can. I don't think any TV screen will do it justice.