This is a horror movie, based after a Spanish version called [REC]. The movie is shot in the hand held camera style.
A reporter and her cameraman are following a group of firefighters into an apartment building where there has been a 911 call. One of the residents has been screaming in her apartment. Basically, there is some sort of rabies virus that turns people into zombie-like animals, and it is spreading throughout the building. The tenants (and firefighters, reporter, ect) are then locked in the building by the center for disease control, thus preventing them from escape. Let the madness begin.
Okay, so that wasn't a very good explanation of the movie. Here's what you need to know:
-The camera is not nearly as shaky as some other movies shot in the same way.
-Lots of people die
-This movie is very cool.
Granted, you will have to like horror movies to enjoy this, but it's pretty intense and exciting. Rent it...if you dare. Muah ha ha ha......But seriously, check it out.