This is not a horror movie, so don't go into it thinking you are getting a horror. It is a strange movie with a lot of symbolism. There is some good acting, but overall the movie is just weird. It is more concerned with symbolism than just telling an interesting story.
SPOILER ALERT. The symbolism in this movie is biblical. And the story is basically about God and Mother nature. It is about how we are killing the earth and how God is selfish wanting love of people instead of just the love of the earth. It tells the story of Adam and Eve, Cain and Able, and even Jesus being born, sacrificed, and then we eating Jesus body and blood.