As a teenager, Diana (Evan Rachel Wood) is a little more rebellious and reckless than most. But her friend Maureen (Eva Amurri) is the opposite -- a shy, studious, church-going teen. They jokingly refer to themselves as "the virgin and the whore." But on a thoroughly typical spring day, the girls are in the school bathroom when they hear gunshots. Then the shooter enters the bathroom and points his gun at them.