This movie was drier than the Sahara Desert in the summer. No back story as to how these kids got the killer virus. Don't waste your time on this piece of crap movie and pray they never make a sequel. The plot (if you can call it that)of this movie is about a family who goes to visit their extended family over the holidays and the kids all come down with this "mysterious" virus that turns them into miniature homicidal maniacs. The only one not sick is the teenager who at one point in the movie gets blamed for what is happening with the kids. The ending is confusing as hell. Not only was the plot poor but so was the writing. The only reason I watched this was because I read an article online stating it was one of the most disturbing movies. The only thing disturbing was how bad it was. Thankfully I didn't buy it, I borrowed it from my local library.