April 1943: Close to the Möhne Dam, there is a camp where Ukrainian forced laborers are required to produce weapons. However, the camp's leader, Georg Hartmann, is a man filled with doubts and scruples. He is about to embark on a love story that can only lead to his demise. At the same time, in London, the British intelligence is hunting a German spy who is more cunning and cold-blooded than all her male counterparts. Under the codename "Night Eye," she is on the trail of a secret that could affect all German dams.