What can I say? I'm a big fan of horror (as well as science fiction, and anything generally weird). If you too are a fan you will be entertained by this movie. It's a "trapped-and-hunted" movie which is a common enough plot idea, but the delivery had some originality and was very entertaining.
Basically, an unlikely mix of people (one's a nympho, for instance) wake up (separately) to find themselves in a cell in underwear with no knowledge of who they are or where they are except that they are captives of some sort. They are able to leave their cells and walk around and in so doing they eventually run into each other. There mission is of course to find out who they are, where they are, and generally: What the heck is going on!!!
I don't want to say anything more and ruin it for the rest of you. Suffice to say that you will be entertained, especially if you are into horror and sci-fi like I am. Finally, it's really hard to find a good scary horror movie these days, isn't it? Sometimes I think it's a lost art and nobody out there really knows how to scare the crap out of you anymore. In fairness, maybe it's harder to scare today's crowd who've been there, done that. I guess we've lost our innocence and the challenge for any moviemaker these days is to find the child in us and say- "Boo!" Love, Boloxxxi.