In the future, a wealthy family is held hostage for harboring the target of a murderous syndicate during the Purge, a 12-hour period in which any and all crime is legalized. (IMDB)
While the movie was no different from many other "statement movies", it definitely said what it said in a unique way. The movie, based on the idea of the wealthy vs. the poor was timely in that it was (and is) a much-talked about topic in the US. However, the way the movie portrayed this was unlike any movie I've ever seen.
The Purge--"a 12-hour period in which any and all crime is legal"--at first seems like any other horror, action, and/or suspense movie, but in adding a Pleasantville sort of angle to it, it flips the original basis 180 degrees. Or, in other words, gives it a new look/idea. It makes the movie much more realistic in that this movie very well could be our reality in no time at all.
The wealthy characters are just as they would be in any other movie, until they are forced to come to terms with the idea of sacrifice. What will they do to protect their livelihood, and more importantly, their families? Yet, even beyond this, viewers may be shocked by the ending. Near the end of the film, the first plot line ends abruptly when characters you may not expect show up for the "party".
All-in-all, the story was well played from a uniqueness standpoint, but almost cliche from a "statement" standpoint. Definitely worth watching, though!