What's confusing about it? It's a preview as to what will happen.

Also, I'm getting tired of people saying the movie was bad because it was or was not realistic. Did anyone see Shrek? Reality check: It's not fucking realistic! That doesn't make it a bad movie. These types of movies have something that makes them immune to the requirement of realistic developments. It's called FICTION.

Also, wtf was bad about the acting? I didn't find any major flaws in the portrayal of any character. If you didn't like how the story was written, then say that. Don't say that the actors did a bad job unless you have a good reason to.

What is it they say about silence being golden?