The Conjuring 2013. Is it REALLY?

Okay so before anything else, I just want to say that anything I'm about to say is mildly affected by the fact that I watched this movie half-guilty because I skipped my study schedule for the nth time already so that probably affected my capability to absorb the essence of the story. Or is there any? Okay so the story (according to me) is like this. There's a family who moved into a house in Rhode Island and then they were happy and stuff, right? On the very first day though, they noticed that their dog refused to enter the house. You know how they say that dogs can feel spirits, right? Yeah. She was barking and acting weird and stuff. And then the girls played hide and seek and then since they don't know the whereabouts of that house yet, they somehow managed to knock something and then the father found out that it's a way down to a cellar. He went down and since it was kind of night time already, he wasn't able to see everything and said he'll be back...