This elaborate two-part television film features a section from the life of communist worker leader Ernst Thälmann. It begins with the bloody riots on May 1, 1929 in Berlin, in which police officers shot at demonstrating workers, and ends with February 7, 1933, when Thälmann appeared as a speaker at the illegal meeting of the Central Committee of the Communist Party of Germany in goat neck. This period was marked by the struggle of the Communists against the ever stronger National Socialists and the rise of Adolf Hitler.

A serial killer kills redheaded women and drapes them like Venus from Sandro Botticellis artwork.

A young woman named Karin Schröder studied biophysics in Moscow and has now returned to the GDR with her diploma. She is thirsty for action, eager to work and now wants to put her specialized knowledge into practice. But at Professor Angerer's institute, where she ends up, there are no opportunities to apply her knowledge. Although Angerer shows her a safe route up the career ladder, Karin sees this more as a means of keeping her quiet - so she turns down the offer. On her own initiative, she goes in search of allies in order to find her way after all. Angerer then instructs her to abandon her self-initiated work - which leads to both professional and personal disaster for the young woman.