Sandrine Mittelstädt

Born in 1960 in Hagen, North Rhine-Westphalia, Nena, whose real name is Gabriele Susanne Kerner, grew up under the influence of a father who encouraged her from childhood to follow her instincts. As a teenager, she tried her hand at music. It wasn't long before a band was formed, The Stripes. 99 Luftballons, their second single, launched Nenamania in Germany and around the world.

Katharina Bruckner, 50, has to deal with many serious cases in the youth welfare office. Even at home she is under stress: Her husband, a surgeon, she sees arm in arm with a younger. And her daughter, who has to go to Marrakech for work, quickly incurs her grandson. In this situation, school psychologist Schubert asks her for help: The city-renowned architect Bremer has appeared with him with her seven-year-old son because of its over-activity in school. The boy looks scared, claims that the Bremer is not his mother, suddenly seems to have disappeared.

Suddenly the Russian Galina reappears in her ex-boyfriend Tom's life and asks him to contact his sister, who heads the crisis team at the Foreign Office. Galina offers herself as a whistleblower to Germany after hackers specifically attacked the computer systems of the Berlin Central Hospital. She has the code that can thwart further attacks, but in return she demands money, asylum and inclusion in a witness protection program for herself and her young daughter.