The documentary investigates the extent of personal morality and how it stands up in extreme circumstances. With examples from the UK, Germany, former Yugoslavia and Iraq, Petersen invites us to question where the 'line' between good and evil should be drawn. In Iraq, an American lieutenant colonel puts a gun to a prisoner's head, forcing him to reveal his assassination plans. The officer saves his men but is later tried by a military court. In the UK, former home secretary Jack Straw is confronted with numerous examples of violence and abuse in British prisons. But improving conditions for prisoners doesn't bring in votes. In The Hague, the Human Rights Court finds a former Bosnian soldier guilty. Esad Landzo talks from prison about how he turned from a young man, dreaming of an artist's life, into an unquestioning torturer. In Frankfurt, a German police officer physically threatens a kidnapper to save a small child in a case that divides the nation.