Elena Dierks blames herself for the death of her daughter Lea, who fell from her stroller over the cliffs of the chalk cliffs on Rügen into the sea on a stormy winter day. She loses her sanity and is admitted to a psychiatric hospital. Years later, she believes she has recognized her daughter in a television report from America. The fate of the young woman deeply affects a nurse working in the psychiatric hospital, prompting her to tell retired commissioner Henning Lüders about it. He takes on the case and makes an incredible discovery.