1964 in Berlin, not long after the raise of the wall that separated the city: ex-prisoner Bruno is chosen by the eastern secret agency to be sent west with a special order. However as soon as he's crossed the border, he reports to the police. He claims his order was to kidnap someone, but he doesn't know who yet. He's forced to continue feignedly. However the east agents don't really trust him and play a double game...

Berlin in 1878: Corinna Schmidt, who was brought up in a petit-bourgeois, academic family, is romantically interested in Leopold Treibel, the son of the lordly councillor of commerce Jenny Treibel – although Corinna is also deeply in love with her cousin Marcel. Leopold is also falling for cute Corinna, and Jenny Treibel tries to prevent their friendship by all means, but changes her opinion when their secret engagement becomes public. To avoid a scandal, she urges them to marry quickly. But Corinna soon withdraws from this complicated situation and again turns to her cousin, who is banished from the country for his social democratic beliefs.