This is about a girl whose mother and her mother's schoolmates are tied to the vengeful spirit of a nun. The girl needs to find out what is going on.
A nun is a good vessel for a horror villain. The idea of any type of evil coming through something that is associated with the love of God presents a deception that victimises those who see only the nun and not the evil within. Perfect for horror.
In my opinion some folks are being a bit harsh. Harshness runs rampant among horror fans but I get it. If you are a horror buff like me, you crave something fresh in a genre that give you a lot of the same thing over and over again. It all starts to seem played out and you start to judge films simply by comparing it to the standard of the films you liked best. The problem with that is some folks are of the mindset that if it ain't the best then it is the worst. I try not to do that. I want to rate this by what I got out of it.
Let's talk about what I liked. The best thing about this is the nun. While we don't see her with a lot of screen time, she was a neat villain. I don't want to give spoilers but I liked how she formed, moved and attacked.
Let's talk about why others are hating on it. The story is weak. This is also seen a lot in horror. If you want the viewers to be impressed you have to give them something worth investing into. Don't be so vague. Give us a story with depth. The acting could've been better.
I have seen worse films and this was ok. Not perfect but I could look past problems and still enjoy the film. If you aren't a horror snob, this really isn't all that bad and you can find some enjoyment in it.