The film explores a group of boys and girls who decided to a remote area in a mountain in Australia. It is just a picnic in this area, but it turned into another horror way after they comes back to home. Life turned into a mysterious secret when they discovered that their families disappeared. They must fight to get their life back.
...despite the R-rating, this isn't really a movie for grown-ups, Tomorrow When the War Began can't be completely dismissed as a teen movie either. It's a curious thing, with sleek, fluid action set pieces and moments that approach - then bungle - grace.