The plot is fine. It's pretty basic, and certainly nothing more clever than what you'd get from a TV show. But it's entertaining enough to watch.

Sandler and Aniston don't really have a good on-screen chemistry. And Sandler's character, supposedly a NYPD sergeant, is not believable--parking enforcement, maybe--but it's a weak plot device. The early dialog is jarringly stupid and not funny, even for a Sandler movie. But once the story moves along, combined with the action sequences, it gets less stupid and comes together as a more enjoyable action comedy.

So, in short, it starts as a 2 and ends as a 6, so I rate this a 4.