1944. Evil shows no mercy. 2013. Evil never expires. In 1944, Kathrin Mändler starts a job as a nurse and believes she has finally found her place in life. Shortly after, when she meets the charismatic doctor Karl Landmann, she feels an undeniable attraction to him. Too late, she realizes that Landmann's work threatens the lives of many people – including her own. In 2013, in Munich, a man named Manolis Lefteris lives for special assignments. When he is tasked with tracking down mysterious files belonging to an elderly lady, he considers it a routine job. He has no idea that he is about to uncover a crime that has lasted for generations...