"On the night of the annual Purge, a man sets out to exact vengeance on the man who killed his son, but becomes compelled to assist a mother and daughter who were taken from their home, along with a couple who were left stranded on the highway, to help them survive the night."
Usually I avoid trailers because often they contain spoilers but I couldn't resist.
Didn't notice any spoilers at first sight but the suprise effect is kinda gone when you watch the trailers, so be warned!
Trailer 1: The couple stranded on the highway
http://www.youtube.com/watch?v=Yaoh3PqHG7I
Trailer 2: The man out for vengeance
http://www.youtube.com/watch?v=XzFCDqKE4yA
I'm starting to think they made the first one a home invasion movie so they could use the profit for what they actually wanted to do.
I'm looking forward to this!