Anna teaches violin at a music school, her husband is an instrument-maker. They have a 10-year-old son, Jonas. At school, Anna champions young Alexander, in whom she alone sees great talent. She devotes much energy and attention preparing him for the next stage exam to prove she was right. Soon Anna devotes more time to him than to Jonas, bringing the two boys into rivalry. At the same time her marriage is collapsing, she withdraws increasingly from her own family and starts an affair with her colleague Christian, who is encouraging her to join a quartet. When she fails during their joint concert, the pressure mounts. With Alexander now her vehicle, she drives him ever onwards and upwards. Come the day of the exam, events take a tragic turn…

Colognian commissioner Gereon Rath moves to Berlin, the epicenter of political and social changes in the Golden Twenties.

A tragic love story set in East Berlin with the backdrop of an undercover Stasi controlled culture. Stasi captain Wieler is ordered to follow author Dreyman and plunges deeper and deeper into his life until he reaches the threshold of doubting the system.