A teenage girl struggles to survive and to find her younger sister during the July 2011 terrorist mass murder at a political summer camp on the Norwegian island of Utøya.A teenage girl struggles to survive and to find her younger sister during the July 2011 terrorist mass murder at a political summer camp on the Norwegian island of Utøya.A teenage girl struggles to survive and to find her younger sister during the July 2011 terrorist mass murder at a political summer camp on the Norwegian island of Utøya.