Based on a true story, a group of Jewish vigilantes, men and woman, survive the Holocaust and vow to avenge the death of their people – “an eye for any eye, a tooth for a tooth.” Led by charismatic leader Abba Kovner, they formulate the biggest revenge operation in history, “Plan A”. They infiltrate German water companies as undercover engineers with only one goal: to poison the drinking water in Nuremberg, Munich, Cologne, Weimar and Hamburg.