In the dying days of World War II, a secret organisation of Holocaust survivors plans a terrible revenge. Six million Jews are dead but, by 1946, just a handful of Nazis face trial. Most of the guilty will never face justice. For many of Hitler's victims, this is not enough. Based on previously unheard recordings and exclusive interviews with those involved - all of whom are over 90 - this documentary tells the story of a remarkable secret group known as The Avengers, who decide to take matters into their own hands. Assembled by the warrior-poet Abba Kovner, their aim is 'an eye for an eye, a tooth for a tooth, a life for a life.' Their plan: to murder six million Germans by infiltrating German cities and poisoning the water supply.