As said, it follows a religious Texas family in the '50s. The oldest child, Jack (Hunter McCracken/Sean Penn), loses his innocence and reminisces his childhood to make peace with his father (Brad Pitt). In modern time, Jack finds himself lonely and he tries to find out what faith and worship are and the purpose of living.
The film isn't much dialogue, but more of a verbal character study. For example, following the parent Pitt plays, you can see without listening that he loves his children, but is very strict, very stern, and abuses them. He gives a fine performance, but an Oscar-nod is unlikely. Jessica Chastain plays his wife, but is more of a character that dances around and is in la-la land. Lastly, it is the performances by Laramie Eppler and McCracken as the two main children that steal the show. They are innocent, sympathetic, and fun to watch without being a hassle to follow. 
Now for what we all want to discuss: the "art show." It is incredible. Each and every part of what we see in what seems like a trip on getting high is exquisite, and deserves credit, but is complimented by the wonderful cinematography provided. Never have I felt so into scenes like what you see ever since watching 2001: A Space Odyssey.
This film is one of those one-in-a-million films that, while a bit narcissistic, is vastly intelligent, and treats its audience seriously. Unfortunately, it is a limited release, took a half-hour to get there, but was worth it. It felt slow at parts, but was still exciting to see Jack's childhood, and the final sequence was beautiful and worth it. This film could potentially win many Oscars, like Editing, Cinematography, Visual Effects, possibly Sound, and even Best Director. This film will make you ask lots of questions, and receives a 4/4.
